{"id":33634,"date":"2026-08-29T07:55:52","date_gmt":"2026-08-29T11:55:52","guid":{"rendered":"https:\/\/www.ecoportal.net\/en\/?p=33634"},"modified":"2026-08-29T07:55:52","modified_gmt":"2026-08-29T11:55:52","slug":"coyote-swam-alcatraz-island-mystery","status":"publish","type":"post","link":"https:\/\/www.ecoportal.net\/en\/coyote-swam-alcatraz-island-mystery\/33634\/","title":{"rendered":"A coyote somehow swam to Alcatraz, vanished before cameras could find him again, and DNA in his droppings revealed he had come from the island nobody expected"},"content":{"rendered":"<p>In late January 2026, thousands of tourists visiting Alcatraz Island were treated to a surprising spectacle.<\/p>\n<p><strong>A lone coyote emerged from the icy waters<\/strong> of San Francisco Bay onto the rocky coastline of the old prison.<\/p>\n<p>Frigid winter winds whipped across the bay as the animal crawled ashore.<\/p>\n<p>The animal looked <strong>spent and shaken while trying to regain<\/strong> its balance.<\/p>\n<p>This unexpected visitor quickly drew international attention, leaving onlookers and wildlife experts alike in awe of its journey. People across the Bay Area quickly flooded social media with grainy photos and videos of the unexpected swimmer.<\/p>\n<h2>Park service response and tracking efforts<\/h2>\n<p>A day after the coyote first appeared on January 24, the National Park Service began <strong>a concerted effort to find and follow<\/strong> this unusual animal.<\/p>\n<p>Since Alcatraz has been designated as a protected habitat for many endangered seabird species, including Brandt&#8217;s cormorant, park rangers felt it necessary to remove the coyote. They planned to relocate him to a less populated part of the mainland within the Golden Gate National Recreation Area.<\/p>\n<p>To track the elusive animal, <strong>rangers deployed an extensive network of<\/strong> motion-activated cameras and acoustic recorders across the historic grounds.<\/p>\n<p>However, after months of watching the cameras and searching for him by both rangers and visitors, there was no evidence of him anywhere. It appeared he had simply vanished.<\/p>\n<p>After conducting an extensive search, they were able to <strong>confirm he had hunted seabirds while on Alcatraz<\/strong>.<\/p>\n<p>Several dead birds were recovered that showed obvious signs of being eaten.<\/p>\n<h2>Tracking origin through DNA testing<\/h2>\n<p><strong>Scientists assumed that he crossed from San Francisco<\/strong>, which is about one mile south of Alcatraz.<\/p>\n<p>They thought the most logical explanation was that the coyote came from San Francisco&#8217;s urban parks system.<\/p>\n<p>However, <strong>when they analyzed the scat collected from Alcatraz<\/strong>, they got a much different answer.<\/p>\n<p>To identify what area of California he came from, scientists sent scat samples to the Mammalian Ecology and Conservation Unit at the University of California at Davis Veterinary Genetics Lab.<\/p>\n<p>There, Dr. Ben Sacks and his team compared the coyote scat against three other areas. These included San Francisco, South Marin County, and Angel Island, as detailed by the <a href=\"https:\/\/www.nps.gov\/goga\/learn\/news\/alcatraz-coyote-wasn-t-a-city-boy-after-all.htm\" target=\"_blank\" rel=\"noopener\">National Park Service<\/a>.<\/p>\n<h2>How did the coyote swim to Alcatraz?<\/h2>\n<p>Results indicated that this individual male coyote was genetically identical to those in the coyote population on Angel Island State Park. Angel Island is located approximately two miles north of Alcatraz.<\/p>\n<p>This means he had to leave Angel Island and <strong>cross approximately two miles of open bay water<\/strong>.<\/p>\n<p>The route included treacherous tidal currents, very cold water, and large waves.<\/p>\n<p>San Francisco Bay is known for its <strong>strong tidal currents, cold temperatures, rough seas, and<\/strong> turbulent conditions.<\/p>\n<p>Coyotes have shown themselves to be capable swimmers when driven by instinct. They are also motivated by the <a href=\"https:\/\/www.ecoportal.net\/en\/elephants-anteaters-human-hunters\/25968\/\">need to leave their natal area<\/a> in search of space, mates, or food sources.<\/p>\n<p>Researchers believe this young male <strong>left his natal territory to find a place<\/strong> of his own.<\/p>\n<p>He then braved the dangers of open bay currents to reach Alcatraz.<\/p>\n<h3>Surprising findings and wildlife resilience<\/h3>\n<p>Researchers&#8217; discovery of the <strong>genetic identity of this coyote shocked them all<\/strong>.<\/p>\n<p>National Park Service wildlife ecologist Bill Merkle <a href=\"https:\/\/www.ecoportal.net\/en\/tiny-fox-found-refuge-in-solar-farm\/24686\/\">expressed amazement at the coyote&#8217;s adaptability<\/a>.<\/p>\n<p>He also pointed <strong>to the animal&#8217;s exceptional swimming ability<\/strong>.<\/p>\n<p>It is unknown where the coyote ended up after leaving Alcatraz. Park rangers do not know if he perished on the island, if he swam back to Angel Island, or if he made it safely to the mainland shores of Marin County or San Francisco County.<\/p>\n<p>Ultimately, its remarkable adaptability serves as a stark reminder of how wildlife will push geographic limits to navigate and <a href=\"https:\/\/www.ecoportal.net\/en\/americas-first-wildlife-highway\/29321\/\">survive in increasingly fragmented landscapes<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In late January 2026, thousands of tourists visiting Alcatraz Island were treated to a surprising spectacle. A lone coyote emerged from the icy waters of San Francisco Bay onto the rocky coastline of the old prison. Frigid winter winds whipped across the bay as the animal crawled ashore. The animal looked spent and shaken while &#8230; <a title=\"A coyote somehow swam to Alcatraz, vanished before cameras could find him again, and DNA in his droppings revealed he had come from the island nobody expected\" class=\"read-more\" href=\"https:\/\/www.ecoportal.net\/en\/coyote-swam-alcatraz-island-mystery\/33634\/\" aria-label=\"Read more about A coyote somehow swam to Alcatraz, vanished before cameras could find him again, and DNA in his droppings revealed he had come from the island nobody expected\">Read more<\/a><\/p>\n","protected":false},"author":27,"featured_media":33811,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"Coyote,DNA,mystery","rank_math_title":"","rank_math_description":"A coyote swam across San Francisco Bay to Alcatraz, disappeared without a trace, and left behind DNA evidence that revealed an unexpected island origin.","footnotes":""},"categories":[83],"tags":[],"class_list":["post-33634","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earth"],"_links":{"self":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/33634","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/comments?post=33634"}],"version-history":[{"count":0,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/33634\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media\/33811"}],"wp:attachment":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media?parent=33634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/categories?post=33634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/tags?post=33634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}