{"id":2985700,"date":"2026-11-01T00:00:27","date_gmt":"2026-11-01T07:00:27","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2985700"},"modified":"2026-10-30T17:08:51","modified_gmt":"2026-10-31T00:08:51","slug":"how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park","title":{"rendered":"How to map GPS locations for grizzly bears in Denali National Park"},"author":319752,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[22941],"tags":[781275,26451,28101,557702,32791],"industry":[],"product":[36561],"class_list":["post-2985700","blog","type-blog","status-publish","format-standard","hentry","category-mapping","tag-30daymapchallenge","tag-cartography","tag-gps","tag-imagery-and-remote-sensing","tag-wildlife","product-arcgis-pro"],"acf":{"authors":[{"ID":319752,"user_firstname":"Elizabeth","user_lastname":"Menezes","nickname":"Elizabeth Menezes","user_nicename":"elizabeth-menezes","display_name":"Elizabeth Ashley Menezes","user_email":"emenezes@esri.com","user_url":"","user_registered":"2022-10-07 16:23:06","user_description":"Hello, World! \r\nElizabeth here to share my world with the world one map at a time! I am a Raster Product Engineer with the Imagery &amp; Remote Sensing team. I focus and work on UX\/UI design and development of RADAR &amp; SAR based capabilities at Esri. My education is in geophysics and my thesis work centered around understanding induced earthquake occurrences using seismic data and satellite imagery. As an advocate for science communication, I enjoy bridging the gap between science and design \u2014 combining my technical knowledge with my keen eye for design to create beautiful science.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/10\/Elizabeth_Menezes_profile1_crop-213x200.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}],"short_description":"This article explains how to map hourly GPS locations from three Denali grizzly bears in ArcGIS Pro for #30DayMapChallenge. Day 1: Points.","flexible_content":{"0":{"acf_fc_layout":"content","content":"<p>Calling all mapmakers, wildlife lovers, and anyone who has ever wondered where a grizzly bear goes when nobody is watching!<\/p>\n"},"1":{"acf_fc_layout":"content","content":"<figure class=\"wp-block-image size-full\"><a style=\"display: block;border: 0;text-decoration: none;box-shadow: none;background: none\" title=\"Click to enlarge in a new tab\" href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Day1_OnePointPerHour_fullscreen-by-emenezes.gif\" target=\"_blank\" rel=\"noopener\"><br \/>\n<img decoding=\"async\" style=\"display: block;width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Day1_OnePointPerHour_fullscreen-by-emenezes.gif\" alt=\"Animated dark map in which glowing blue, orange, and green dots trace three grizzly bears\u2019 movements across Denali National Park and Preserve as a date ticker advances from May to September 2006. Created by Elizabeth A. Menezes\" \/><br \/>\n<\/a><figcaption class=\"wp-element-caption\">Day 1 &#8211; Points. One dot, per hour map shows three Denali grizzlies wandering through summer 2006, one GPS point at a time. Click to enlarge. #30DayMapChallenge<\/figcaption><\/figure>\n"},"2":{"acf_fc_layout":"content","content":"<p>Welcome to Day 1 of the 2026 <strong>#30DayMapChallenge<\/strong> (a map a day, all November long!), where the theme is <strong>Points<\/strong>. For this one, I\u2019m heading back to one of my favorite places on Earth\u2026 <a href=\"https:\/\/www.nps.gov\/dena\/index.htm\" target=\"_blank\" rel=\"noopener\">Denali National Park and Preserve, Alaska<\/a>, where I once worked <!--StartFragment --><span class=\"cf0\">as a science communicator (<\/span><em><span class=\"cf1\">more on that later<\/span><\/em><span class=\"cf0\">)!<\/span><\/p>\n<h2>About the Map<\/h2>\n<p><!--EndFragment --><\/p>\n<p>In the summer of 2006, wildlife biologists fitted three female grizzly bears with tracking collars that recorded each bear\u2019s location once an hour. Here, each bear gets her own neon color marker, and every point glows against a dark basemap. The dark basemap makes each bear\u2019s point marker pop like a simulated GPS ping on a wildlife tracking screen. It also gives the map the feel of a starry Denali night, which I find ironically funny, since the sun barely sets there in the summer!<\/p>\n<p><em><strong>Zoom into the full-resolution map<\/strong><\/em> or\u00a0<a href=\"https:\/\/www.arcgis.com\/home\/item.html?id=14c678bb7fde4aab9268d26145eb5b2f\" target=\"_blank\" rel=\"noopener\">download<\/a> to spot the bright clusters where bears lingered and the scattered pings where one bear wandered far from home.<\/p>\n<p>Keep reading to learn more about the inspiration behind the map, and how to recreate the map yourself in ArcGIS Pro!<\/p>\n<p><strong>Can\u2019t wait to get started?<\/strong> Skip ahead to the <a href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park#how-to\"><strong>step-by-step guide<\/strong><strong> below<\/strong><\/a>.<\/p>\n"},"3":{"acf_fc_layout":"content","content":"<h2>Why is Denali my favorite place on Earth?<\/h2>\n"},"4":{"acf_fc_layout":"image","image":{"ID":2985708,"id":2985708,"title":"Image - Day 1 - Points - 30DMC 2026","filename":"Image-Day-1-Points-30DMC-2026.gif","filesize":740577,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\/image-day-1-points-30dmc-2026-3","alt":"Photos of Elizabeth A. Menezes working at Denali National Park with a green backpack on in front of softly blurred mountains. Photo credit: Felix Bruner and Mary Lewandowski.","author":"319752","description":"","caption":"","name":"image-day-1-points-30dmc-2026-3","status":"inherit","uploaded_to":2985700,"date":"2026-10-22 19:44:27","modified":"2026-10-22 20:24:44","menu_order":0,"mime_type":"image\/gif","type":"image","subtype":"gif","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1142,"height":748,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-213x200.gif","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","medium-width":398,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","medium_large-width":768,"medium_large-height":503,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","large-width":1142,"large-height":748,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","1536x1536-width":1142,"1536x1536-height":748,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","2048x2048-width":1142,"2048x2048-height":748,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-710x465.gif","card_image-width":710,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.gif","wide_image-width":1142,"wide_image-height":748}},"image_position":"center","orientation":"horizontal","hyperlink":""},"5":{"acf_fc_layout":"content","content":"<p>In the summer of 2018, I grabbed my backpacking pack and laced up my hiking boots to spend an unforgettable season here as a science communicator with the <strong><a href=\"https:\/\/www.nps.gov\/subjects\/science\/scientists-in-parks.htm\" target=\"_blank\" rel=\"noopener\">Scientists-in-the-Parks<\/a><\/strong> program. I led youth field programs, designed visitor center exhibits and a children\u2019s book, and helped survey alpine bees (<em>yes, Denali has bees, and they are un-bee-lievably cool<\/em>).<\/p>\n"},"6":{"acf_fc_layout":"image","image":{"ID":2985829,"id":2985829,"title":"Image - Day 1 - Points - 30DMC 2026 - bear saftey","filename":"Image-Day-1-Points-30DMC-2026-bear-saftey.gif","filesize":775967,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\/image-day-1-points-30dmc-2026-bear-saftey","alt":"Elizabeth A. Menezes in a green NPS cap and navy jacket holds her hands up like bear claws while teaching about bear safety with a group of junior scientists. Photo credit: Mary Lewandowski.","author":"319752","description":"","caption":"Teaching bear safety 101 to junior scientists in Denali. \"Stand your ground, never run, stick together, and make yourself look as big as you can!\"","name":"image-day-1-points-30dmc-2026-bear-saftey","status":"inherit","uploaded_to":2985700,"date":"2026-10-23 18:14:50","modified":"2026-10-26 20:10:04","menu_order":0,"mime_type":"image\/gif","type":"image","subtype":"gif","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1382,"height":835,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey-213x200.gif","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","medium-width":432,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","medium_large-width":768,"medium_large-height":464,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","large-width":1382,"large-height":835,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","1536x1536-width":1382,"1536x1536-height":835,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","2048x2048-width":1382,"2048x2048-height":835,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey-770x465.gif","card_image-width":770,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-saftey.gif","wide_image-width":1382,"wide_image-height":835}},"image_position":"center","orientation":"horizontal","hyperlink":""},"7":{"acf_fc_layout":"content","content":"<p>Grizzlies were a big part of my summer in Denali. In the youth programs I led, bears were always a crowd favorite, and the kids had tons of questions about them. To teach bear safety, I brought along bear picture cards and demonstrated what to do if they ever met a real one. Out on the trail, we always made plenty of noise so we wouldn\u2019t surprise one.<\/p>\n"},"8":{"acf_fc_layout":"content","content":"<h2>Where does the data come from?<\/h2>\n"},"9":{"acf_fc_layout":"content","content":"<p>The data comes from Denali\u2019s <a href=\"https:\/\/www.nps.gov\/dena\/learn\/nature\/denali-park-road-capacity-study.htm\" target=\"_blank\" rel=\"noopener\">Park Road Capacity Study<\/a>, which put GPS collars on 20 grizzly bears along the park road to learn how traffic affects wildlife. The National Park Service published the tracks of three of those bears as free downloads.<\/p>\n"},"10":{"acf_fc_layout":"image","image":{"ID":2985781,"id":2985781,"title":"Image - Day 1 - Points - 30DMC 2026","filename":"Image-Day-1-Points-30DMC-2026.png","filesize":1812158,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\/image-day-1-points-30dmc-2026-5","alt":"Denali grizzly bear photo collage. Photo credit: Mary Lewandowski.","author":"319752","description":"","caption":"","name":"image-day-1-points-30dmc-2026-5","status":"inherit","uploaded_to":2985700,"date":"2026-10-22 23:49:51","modified":"2026-10-22 23:49:57","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1308,"height":823,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","medium-width":415,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","medium_large-width":768,"medium_large-height":483,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","large-width":1308,"large-height":823,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","1536x1536-width":1308,"1536x1536-height":823,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","2048x2048-width":1308,"2048x2048-height":823,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026-739x465.png","card_image-width":739,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/11\/Image-Day-1-Points-30DMC-2026.png","wide_image-width":1308,"wide_image-height":823}},"image_position":"center","orientation":"horizontal","hyperlink":""},"11":{"acf_fc_layout":"content","content":"<blockquote><p><strong>Fun fact:<\/strong> two of the three, bears 576 and 586, had a yearling cub with them when they were collared!<\/p><\/blockquote>\n"},"13":{"acf_fc_layout":"content","content":"<figure class=\"wp-block-video\"><video style=\"width: 100%;height: auto;display: block\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026.mp4\" preload=\"metadata\" controls=\"controls\" width=\"300\" height=\"150\" aria-label=\"Video titled Wildlife Watch with two panels. Left: a pale blond grizzly and two cubs graze on green tundra below reddish hills. Right: a brown grizzly feeds beside a gravel road with snowfields behind, seen from a vehicle window.\"><br \/>\n<\/video><figcaption class=\"wp-element-caption\">Here&#8217;s what bear activity looks like on the ground in Denali, filmed on my cell phone in 2018 alongside park photographer Mary Lewandowski.<\/figcaption><\/figure>\n"},"14":{"acf_fc_layout":"image","image":{"ID":2985706,"id":2985706,"title":"Image - Day 1 - Points - 30DMC 2026 (1)","filename":"Image-Day-1-Points-30DMC-2026-1.png","filesize":714010,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\/image-day-1-points-30dmc-2026-1-2","alt":"A hand rests on gray mud beside a large grizzly bear track, surrounded by rocks and wet sand.","author":"319752","description":"","caption":"A grizzly track in the mud with my hand for scale.","name":"image-day-1-points-30dmc-2026-1-2","status":"inherit","uploaded_to":2985700,"date":"2026-10-22 19:44:19","modified":"2026-10-22 20:24:44","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":781,"height":616,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","medium-width":331,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","medium_large-width":768,"medium_large-height":606,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","large-width":781,"large-height":616,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","1536x1536-width":781,"1536x1536-height":616,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","2048x2048-width":781,"2048x2048-height":616,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1-590x465.png","card_image-width":590,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-1.png","wide_image-width":781,"wide_image-height":616}},"image_position":"right","orientation":"horizontal","hyperlink":""},"15":{"acf_fc_layout":"content","content":"<p>So, what makes this data perfect for Points? Every location a collar records a \u201cGPS fix,\u201d which is about as pure a point as you can get: one latitude, one longitude, and one moment in time. On its own, a single fix looks almost insignificant. Put thousands of them together, though, and a bear\u2019s whole summer starts to take shape.<\/p>\n"},"16":{"acf_fc_layout":"content","content":"<h2>But wait, what exactly is a GPS fix?<\/h2>\n<p>Great question! Let\u2019s take a quick detour into how GPS works, because it\u2019s the reason these points exist at all.<\/p>\n<p>A GPS receiver listens for signals from satellites orbiting high above Earth. It measures how long each signal takes to arrive, turns those travel times into distances, and solves for its own position. <strong>Four satellites<\/strong> is the magic number, because the receiver has four unknowns to solve for: its latitude, longitude, height, and the error in its own clock (which is far less precise than the atomic clocks riding on the satellites). Each successful solution, stamped with a time, is one \u201cfix\u201d (<a href=\"https:\/\/www.scientificamerican.com\/article\/how-do-gps-devices-work\/\" target=\"_blank\" rel=\"noopener\">Scientific American<\/a>).<\/p>\n<p>Here\u2019s where it gets fun. A permanent <strong>GPS station<\/strong>, like the one I\u2019m standing next to pictured below, stays perfectly still and records its position day after day and year after year. Those long records let scientists measure ground movement as slow as a millimeter per year, from shifting tectonic plates to land that sinks as groundwater is pumped out during droughts. A GPS collar flips that idea around: the ground stays put and the antenna goes for a walk (a very long walk, in bear 586\u2019s case).<\/p>\n"},"17":{"acf_fc_layout":"image","image":{"ID":2985707,"id":2985707,"title":"Image - Day 1 - Points - 30DMC 2026 (2)","filename":"Image-Day-1-Points-30DMC-2026-2.png","filesize":1477011,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\/image-day-1-points-30dmc-2026-2","alt":"A woman in a sun hat and white overalls stands on rocky ground between a solar panel array and a tripod topped with a white dome-shaped GPS antenna, with conifers and mountains behind her.","author":"319752","description":"","caption":"","name":"image-day-1-points-30dmc-2026-2","status":"inherit","uploaded_to":2985700,"date":"2026-10-22 19:44:23","modified":"2026-10-23 20:27:40","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1269,"height":1011,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","medium-width":328,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","medium_large-width":768,"medium_large-height":612,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","large-width":1269,"large-height":1011,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","1536x1536-width":1269,"1536x1536-height":1011,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","2048x2048-width":1269,"2048x2048-height":1011,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2-584x465.png","card_image-width":584,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-2.png","wide_image-width":1269,"wide_image-height":1011}},"image_position":"center","orientation":"horizontal","hyperlink":""},"18":{"acf_fc_layout":"content","content":"<p>Collars don\u2019t always get their fix, though. Dense forest, steep terrain, and even a bear\u2019s choice of napping spot can block the sky. That\u2019s why our bears have a few gaps in their records. In the animated map<!--StartFragment --><span class=\"cf0\">, I used a <\/span><a class=\"cf0\" href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/mapping\/layer-properties\/definition-query.html\" target=\"_blank\" rel=\"noopener\"><span class=\"cf1\">definition query<\/span><\/a><span class=\"cf0\"> to hide the trail segments that cross those gaps, so they don<\/span><span class=\"cf2\">\u2019<\/span><span class=\"cf0\">t show up as long, misleading lines.<\/span><\/p>\n"},"19":{"acf_fc_layout":"image","image":{"ID":2985835,"id":2985835,"title":"Image - Day 1 - Points - 30DMC 2026 - bear paw prints","filename":"Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","filesize":5885,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\/image-day-1-points-30dmc-2026-bear-paw-prints","alt":"","author":"319752","description":"","caption":"","name":"image-day-1-points-30dmc-2026-bear-paw-prints","status":"inherit","uploaded_to":2985700,"date":"2026-10-23 18:31:31","modified":"2026-10-23 18:32:10","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":112,"height":40,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","thumbnail-width":112,"thumbnail-height":40,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","medium-width":112,"medium-height":40,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","medium_large-width":112,"medium_large-height":40,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","large-width":112,"large-height":40,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","1536x1536-width":112,"1536x1536-height":40,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","2048x2048-width":112,"2048x2048-height":40,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","card_image-width":112,"card_image-height":40,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Image-Day-1-Points-30DMC-2026-bear-paw-prints-e1792780318966.png","wide_image-width":112,"wide_image-height":40}},"image_position":"center","orientation":"horizontal","hyperlink":""},"20":{"acf_fc_layout":"content","content":"<h4 id=\"how-to\"><a href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/mapping\/how-to-map-gps-locations-for-grizzly-bears-in-denali-national-park\"><strong>(back to top)<\/strong><\/a><\/h4>\n"},"21":{"acf_fc_layout":"content","content":"<h2 id=\"how-to\">Ready to make your own?<\/h2>\n<p dir=\"ltr\">Follow this step-by-step guide to recreate the map in ArcGIS Pro! A handful of ArcGIS Pro tools did most of the work, and you can rebuild the static map in just 10 approachable steps. Look for the <strong>Quick way<\/strong> options to skip ahead with my ready-made data and layout.<\/p>\n<blockquote>\n<p dir=\"ltr\"><em>Estimated time: 25 mins (about 10 with the quick ways)<\/em><\/p>\n<\/blockquote>\n<ol>\n<li value=\"1\"><strong>Get the data.<\/strong>\n<ul style=\"margin: 6px 0 0 0 !important;padding-bottom: 0 !important\">\n<li><strong>Quick way:<\/strong> Download my <strong><a href=\"https:\/\/www.arcgis.com\/home\/item.html?id=0535e423155741aca1de24a594f71824\" target=\"_blank\" rel=\"noopener\">file geodatabase<\/a>,<\/strong> unzip it, and add the <strong>bear_points_2006<\/strong> layer to your map. It\u2019s already merged and labeled by collar ID, so skip ahead to <strong>step 4<\/strong>. Planning to use my layout too? Jump all the way to <strong>step 8<\/strong>.<\/li>\n<li style=\"margin-bottom: 0 !important;padding-bottom: 0 !important\"><strong>From scratch:<\/strong> On the NPS <a href=\"https:\/\/www.nps.gov\/dena\/learn\/nature\/denali-park-road-capacity-study.htm#:~:text=Download%20the%20files%20and%20open%20them%20in%20Google%20Earth\" target=\"_blank\" rel=\"noopener\"><strong>Denali Park Road Capacity Study<\/strong><\/a> page, download the Bear 573, Bear 576, and Bear 586 KML files.<\/li>\n<\/ul>\n<\/li>\n<li value=\"2\"><strong>Convert each file.<\/strong> Run <strong><a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/tool-reference\/conversion\/kml-to-geodatabase.html\" target=\"_blank\" rel=\"noopener\">KML To Geodatabase<\/a> <\/strong>once per KML. Each run creates a point feature class, like <strong>Bear_573_Points<\/strong>.<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step2_kml_to_geodatabase-e1793040675819.png\" alt=\"KML To Geodatabase tool in the Geoprocessing pane with Bear 573.kml as the input and Bear_573_Points as the output point feature class.\" width=\"473\" height=\"222\" \/><\/li>\n<li value=\"3\"><strong>Combine the bears.<\/strong> Run <strong><a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/tool-reference\/data-management\/merge.html\" target=\"_blank\" rel=\"noopener\">Merge<\/a> <\/strong>on the three Points layers, name the output <strong>bear_points_2006<\/strong>, and check <strong>Add source information to output<\/strong>. The new <strong>MERGE_SRC<\/strong> field records which file each point came from.<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step3_merge_bear_points_2006.png\" alt=\"Merge tool with Bear_586, Bear_576, and Bear_573 as inputs, bear_points_2006 as the output, and the Add source information to output box being checked.\" width=\"469\" height=\"308\" \/><\/li>\n<li value=\"4\"><strong>Set up the map.<\/strong> Right-click the map &gt; <strong>Properties<\/strong> &gt; <strong><a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/mapping\/properties\/specify-a-coordinate-system.html\" target=\"_blank\" rel=\"noopener\">Coordinate Systems<\/a><\/strong>, search for \u201c<strong>Alaska<\/strong>,\u201d and choose <strong>Alaska Albers Equal Area Conic<\/strong>. Plain latitude and longitude would stretch Denali east to west by about 2.2 times, while this equal-area projection keeps every cluster at its true size. Then go dark: on the <strong>Map<\/strong> tab, click <strong>Basemap<\/strong> and choose <strong>Human Geography Dark Map<\/strong>.<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step4_alaska_albers_projection.png\" alt=\"Map Properties dialog on the Coordinate Systems page, searching Alaska with Alaska Albers Equal Area Conic selected.\" width=\"950\" height=\"272\" \/><\/li>\n<li value=\"5\"><strong>Add my bear style.<\/strong> Download <strong><a href=\"https:\/\/www.arcgis.com\/home\/item.html?id=91b005933ea3453d8140cf198c5f8c48\" target=\"_blank\" rel=\"noopener\">Denali grizzlies 2006 bear point symbols<\/a> <\/strong>(.stylx). On the <strong>Insert<\/strong> tab, in the <strong>Styles<\/strong> group, click <strong>Add<\/strong> &gt; <strong><a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/projects\/connect-to-a-style.html\" target=\"_blank\" rel=\"noopener\">Add Style<\/a> <\/strong>and browse to the file. All three glow symbols now live in your project.<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step5_add_style.png\" alt=\"ArcGIS Pro Insert tab with the Add menu open and Add Style highlighted in the Styles group.\" width=\"1005\" height=\"157\" \/><\/li>\n<li value=\"6\"><strong>Color by bear.<\/strong> Coloring by bear makes it easy to find each bear\u2019s home range and compare how the three moved through the same landscape. In the <strong>Symbology<\/strong> pane, choose <strong><a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/mapping\/layer-properties\/unique-value.html\" target=\"_blank\" rel=\"noopener\">Unique Values<\/a><\/strong> with <strong>Field 1<\/strong> set to <strong>bear_id<\/strong> (or <strong>MERGE_SRC<\/strong> if you built the data from scratch).<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step6_gallery_glow_symbols-e1793040619704.png\" alt=\"Symbology pane Gallery tab searching Denali, showing the Bear 573, Bear 576, and Bear 586 glow symbols next to the glowing map.\" width=\"1005\" height=\"330\" \/>\n<ul style=\"margin: 6px 0 0 0 !important;padding-bottom: 0 !important\">\n<li>Click each bear\u2019s symbol to open the<strong> <a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/mapping\/layer-properties\/find-symbols.html\" target=\"_blank\" rel=\"noopener\">Gallery<\/a> <\/strong>tab. In the search box, type \u201c<strong>Denali<\/strong>,\u201d and click that bear\u2019s glow symbol.<\/li>\n<li style=\"margin-bottom: 0 !important;padding-bottom: 0 !important\">Rename each class to its bear, so your legend reads <strong>Bear 573<\/strong>, <strong>Bear 576<\/strong>, and <strong>Bear 586<\/strong>.<\/li>\n<\/ul>\n<blockquote style=\"margin: 10px 0 0 0 !important\"><p><strong>Note:<\/strong> The NPS file named \u201cBear 573\u201d contains collar 574586, and \u201cBear 586\u201d contains collar 574573. I label bears by collar ID, so those two names swap on my map. My geodatabase already uses the collar IDs.<\/p><\/blockquote>\n<\/li>\n<li value=\"7\"><strong>Make it glow.<\/strong> On the <strong>Feature Layer<\/strong> tab, in the <strong>Effects<\/strong> group, set both <strong><a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/mapping\/layer-properties\/apply-visual-effects.html\" target=\"_blank\" rel=\"noopener\">Layer Blend<\/a><\/strong> and <strong>Feature Blend<\/strong> to <strong>Screen<\/strong>. Like overlapping flashlight beams, stacked points brighten one another, turning the places where a bear lingered into bright glowing clusters.<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step7_layer_and_feature_blend_screen-e1793040567982.png\" alt=\"Feature Layer tab with Layer Blend and Feature Blend both set to Screen in the Effects group.\" width=\"1005\" height=\"190\" \/><\/li>\n<li value=\"8\"><strong>Build the layout.<\/strong><img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step8_import_layout.png\" alt=\"ArcGIS Pro Insert tab with Import Layout highlighted in the Project group.\" width=\"1000\" height=\"195\" \/>\n<ul style=\"margin: 6px 0 0 0 !important;padding-bottom: 0 !important\">\n<li><strong>Quick way:<\/strong> Download my layout file, <strong><a href=\"https:\/\/www.arcgis.com\/home\/item.html?id=bde9d35eff2b40c9bc90e74aeeb07c00\" target=\"_blank\" rel=\"noopener\">One Point Per Hour (.pagx)<\/a><\/strong>. On the <strong>Insert<\/strong> tab, in the <strong>Project<\/strong> group, click <strong>Import Layout<\/strong> &gt; <strong>Import layout file<\/strong>, browse to the file, and click <strong>OK<\/strong>. My finished map comes along with it: projection, dark basemap, glow symbols, and callouts included. If the bear layer shows a red exclamation point in the <strong>Contents<\/strong> pane, click it and browse to <strong>bear_points_2006<\/strong> in my geodatabase. Then skip ahead to <strong>step 10<\/strong>.<\/li>\n<li style=\"margin-bottom: 0 !important;padding-bottom: 0 !important\"><strong>From scratch:<\/strong> I designed mine from scratch with a few custom touches, like the title, which I made in Adobe Illustrator and imported into the layout. To build yours, on the <strong>Insert<\/strong> tab, click<strong> <a href=\"https:\/\/doc.esri.com\/en\/arcgis-pro\/latest\/help\/layouts\/add-a-layout-to-your-project.html\" target=\"_blank\" rel=\"noopener\">New Layout<\/a> <\/strong>and choose a US Legal landscape page (14 \u00d7 8.5 in). Add a map frame and set its scale to 1:525,000. To keep every callout next to the right bear, lock it in place: right-click the map frame in the <strong>Contents<\/strong> pane, choose <strong>Properties<\/strong>, and on the <strong>Display Options<\/strong> tab, set the constraint to <strong>Fixed center and scale<\/strong>. Then add a title, legend, scale bar, and credits.<\/li>\n<\/ul>\n<\/li>\n<li value=\"9\"><strong>Add the story.<\/strong> Place text callouts with leader lines on the moments worth noticing, like bear 586\u2019s big August trek and bear 576\u2019s small home range.<img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;max-width: 100%;height: auto\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/step9_callout_bear_576.png\" alt=\"A text callout in ArcGIS Pro layout view, with a leader line from bear 576&apos;s orange glow cluster to the label Bear 576 stays close, the smallest range: 380 square kilometers (all fixes).\" width=\"642\" height=\"404\" \/><\/li>\n<li value=\"10\"><strong>Export.<\/strong> Use <strong>Share<\/strong> &gt; <strong>Export Layout<\/strong> to save a PNG for social media or a PDF for print.<a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Day-1-Points-30DMC-2026-One-Point-Per-Hour-still-map-by-emenezes-scaled.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" style=\"display: block;margin: 10px 0 0 0 !important;width: 100% !important;max-width: 100% !important;height: auto !important\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/Day-1-Points-30DMC-2026-One-Point-Per-Hour-still-map-by-emenezes-scaled.png\" alt=\"The finished One Point Per Hour map, with callouts and leader lines marking bear 573 heading north, bear 586&apos;s longest trek, and bear 576 staying close. Click to enlarge.\" width=\"642\" height=\"392\" \/><\/a><span style=\"display: block;margin-top: 4px;text-align: center;font-size: 0.85em;font-style: italic;color: #6e6e6e\">Click the map to enlarge.<\/span><\/li>\n<\/ol>\n"},"22":{"acf_fc_layout":"content","content":"<h2>Happy mapping!<\/h2>\n<p>Thanks for trekking with me and da\u2019 bears. \ud83d\udc3b<\/p>\n<blockquote><p><strong>Special thanks<\/strong> to park photographer and good friend Mary Lewandowski, who took the bear photos and most of the photos I\u2019m in!<\/p><\/blockquote>\n"}},"related_articles":[{"ID":2984109,"post_author":"319752","post_date":"2026-10-05 17:05:33","post_date_gmt":"2026-10-06 00:05:33","post_content":"","post_title":"Make a Holi Festival Inspired Map from a Color Me Mappy Page","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"open","post_password":"","post_name":"make-a-holi-festival-inspired-map-from-a-color-me-mappy-page","to_ping":"","pinged":"","post_modified":"2026-10-06 13:53:21","post_modified_gmt":"2026-10-06 20:53:21","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2984109","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":2946119,"post_author":"314602","post_date":"2025-10-29 14:31:13","post_date_gmt":"2025-10-29 21:31:13","post_content":"","post_title":"The ArcGIS Pro Team Takes on The 30-Day Map Challenge","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"pro-30daymapchallenge","to_ping":"","pinged":"","post_modified":"2025-12-15 12:44:00","post_modified_gmt":"2025-12-15 20:44:00","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2946119","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"}],"show_article_image":false,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2026\/10\/card_motion_ArcGIS_Blog_Article-Day_1_-_Points_-_30DMC_2026.gif","wide_image":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to map GPS locations for grizzly bears in Denali National Park<\/title>\n<meta name=\"description\" content=\"Learn how to map GPS points in ArcGIS Pro using hourly fixes from three Denali grizzlies, then recreate this glowing. #30DayMapChallenge #points\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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