{"id":8435,"date":"2020-02-22T14:09:13","date_gmt":"2020-02-22T19:09:13","guid":{"rendered":"https:\/\/canada-info.ca\/?p=8435"},"modified":"2020-08-30T14:43:09","modified_gmt":"2020-08-30T18:43:09","slug":"cortes-island-christmas-bird-count","status":"publish","type":"post","link":"https:\/\/canada-info.ca\/en\/cortes-island-christmas-bird-count\/","title":{"rendered":"Cortes Island Christmas bird count"},"content":{"rendered":"<p>By Roy L Hales<\/p>\n<p>When you talk about Cortes Island\u2019s population, most of us think of humans but there is an even larger avian population. The\u00a0<a href=\"https:\/\/cortescurrents.ca\/tag\/cortes-island-museum\/\">Cortes museum\u00a0<\/a>has been taking an annual\u00a0<a href=\"https:\/\/www.cortesisland.com\/cgi-bin\/tideline\/show_articles.cgi?ID=12422&amp;TOPIC=0\">Christmas Bird Count<\/a> since 2001. There were 38 participants this year. Most were in five groups, but there were also a number of people who reported birds visiting feeders, or parts of the island not on the established routes.<\/p>\n<p><!--more--><\/p>\n<div id=\"attachment_8441\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><a class=\"dt-pswp-item\" href=\"https:\/\/canada-info.ca\/wp-content\/uploads\/2020\/08\/DSC05686.jpg\" data-dt-img-description=\"Photo from 2018 bird count - courtesy Cortes Island Museum\"><img aria-describedby=\"caption-attachment-8441\" class=\"size-full wp-image-8441\" src=\"https:\/\/canada-info.ca\/wp-content\/uploads\/2020\/08\/DSC05686.jpg\" alt=\"christmas bird count\" width=\"800\" height=\"533\" srcset=\"https:\/\/canada-info.ca\/wp-content\/uploads\/2020\/08\/DSC05686.jpg 800w, https:\/\/canada-info.ca\/wp-content\/uploads\/2020\/08\/DSC05686-500x333.jpg 500w, https:\/\/canada-info.ca\/wp-content\/uploads\/2020\/08\/DSC05686-320x213.jpg 320w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><p id=\"caption-attachment-8441\" class=\"wp-caption-text\">Photo from 2018 bird count - courtesy Cortes Island Museum<\/p><\/div>\n<h2>The December 2019 Christmas bird count<\/h2>\n<p>They counted 3,149 birds from 65 species, which is about average.<\/p>\n<p>When I inquired about interviewing someone, the museum suggested I contact\u00a0<a href=\"https:\/\/cortesradio.ca\/art-on-the-island-laurel-bohart\/\">Laurel Bohart<\/a>, who led the team in Squirrel Cove.<\/p>\n<p>\u201cThe reason we do a winter bird count is these are residents, and this gives us a better understanding and idea of the resident bird populations. What we did see, and I didn\u2019t see it, but it was seen near Mansons Lagoon and Hollyhock: was\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=GRYE&amp;lang=en\">Greater Yellowlegs<\/a>. This is a shorebird, related to gulls \u2026 and they\u2019re very rare. They shouldn\u2019t even be here,\u201d she said.<\/p>\n<figure class=\"wp-block-image size-large\"><img class=\"wp-image-83365\" src=\"https:\/\/cortescurrents.ca\/wp-content\/uploads\/2020\/02\/cortes-museum-cbc-woodpecker.jpg\" alt=\"2018 Bird Count\" width=\"800\" height=\"534\" \/><figcaption><em>2018 Bird Count \u2013 Courtesy Cortes Island Museum And Archives<\/em><\/figcaption><\/figure>\n<h2>Human Impacts On Bird Population<\/h2>\n<p>One of the most intriguing aspects of Laurel Bohart\u2019s analysis of the changing populations is the degree to which non-climate change related human activities are believed to be the cause:<\/p>\n<ul>\n<li>The\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=CAGO&amp;lang=en\">Canada Goose<\/a>\u00a0population is in decline because of the egg shaking program (you shake the egg to separate the yolk from the white, so an embryo can\u2019t form).<\/li>\n<li><a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=BASW&amp;lang=en\">Barn Swallows<\/a>\u00a0are disappearing because we have fewer barns, less insects, and they are one of the species tricked into raising\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=BHCO&amp;lang=en\">Cowbirds<\/a>\u00a0instead of their own young. (Female Cowbirds put their eggs into smaller birds nests and, as the Cowbird chicks are bigger, they can push the other chicks out.)<\/li>\n<li>The\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/toc.jsp\">Warbler, smaller Sparrow, and Fly Catcher<\/a>\u00a0populations are declining rapidly because of habitat loss.They are also one of the species that fall victim to Cowbird trickery.<\/li>\n<li>Cowbirds thrive on lawns (and bird feeders!).<\/li>\n<li>As a result of the depletion of fish stocks,\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=BAEA&amp;lang=en\">eagles<\/a>\u00a0are looking for other sources of food. This has resulted in an increased predation of goslings and ducklings.<\/li>\n<li>Eagles are also eradicating\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/toc.jsp\">herons<\/a>, who are their competition for salmon and herring. (In the podcast above, Laurel tells us how the adult male heron, in the Natural History Exhibit at Linnaea Farm, died)<\/li>\n<li>There are more Jays on the island because we have more walnut, hazel and fruit trees.<\/li>\n<li>The\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=CORA&amp;lang=en\">Raven<\/a>\u00a0population is increasing because of our garbage dump, road kill, and compost heaps etc.<\/li>\n<li><a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=HOFI&amp;lang=en\">House Finches<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=PUFI&amp;lang=en\">Purple Finches<\/a>\u00a0are becoming more numerous because of the number of bird feeders on the island.<\/li>\n<li>There would be no\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=ANHU&amp;lang=en\">Anna\u2019s Hummingbirds<\/a>\u00a0in our area if it were not for bird feeders. They started coming to Vancouver Island about 40 years ago.<\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img class=\"wp-image-83366\" src=\"https:\/\/cortescurrents.ca\/wp-content\/uploads\/2020\/02\/DSC05679.jpeg\" alt=\"2018 Bird Count\" width=\"800\" height=\"533\" \/><figcaption><em>2018 Bird Count (Laurel Bohart is in the middle, her husband Tom to the left) \u2013 Courtesy Cortes Island Museum And Archives<\/em><\/figcaption><\/figure>\n<\/div>\n<h2>What effect has Climate Change had?<\/h2>\n<p>Can you point to any species and say their population increase or decrease is due to climate change?<\/p>\n<p>\u201cI\u2019d have to think about that. I\u2019m fairly sure that we\u2019re losing not so much species as numbers among the species, especially Warblers, Vireos and all those little insect eaters \u2013 because we\u2019re losing insects. That may be due to climate change, but it is also because of our habit of using pesticides. We have to stop doing that. Climate Change, to me, is just one factor. There are a great many other factors in our changing world \u2026 The issue that is mostly changing the bird population is the human population,\u201d said Laurel Bohart.<\/p>\n<figure class=\"wp-block-image size-large\"><img class=\"wp-image-83367\" src=\"https:\/\/cortescurrents.ca\/wp-content\/uploads\/2020\/02\/20191228_00218c.jpg\" alt=\"2018 Bird Count\" width=\"800\" height=\"534\" \/><figcaption><em>2018 Bird Count \u2013 Courtesy Cortes Island Museum And Archives<\/em><\/figcaption><\/figure>\n<h2>What did you learn from this year\u2019s count?<\/h2>\n<p>\u201cIt\u2019s always best to take a newbie with you because they may spot something that you don\u2019t and ask questions that make you think and make you rethink how you are doing something.\u201d<\/p>\n<p>\u201cIt turns out this novice,\u00a0<a href=\"https:\/\/cortesmuseum.com\/home\/board-of-directors\/\">Donna Collins<\/a>, has very sharp eyes and is an excellent recorder. She is the museum secretary now and extremely precise. This really helped because she was able to remind me of things I might have forgotten. The count was a lot more accurate than it might have been with just Tom and I doing it, because then we would have had to go through everything and remember what we did see.\u00a0 Also she kept me explaining which bird was which; how you could tell field signs; the sounds they were making or not making; what we expected to see; and which species I thought we might see and didn\u2019t \u2026\u201d etc<\/p>\n<p>\u201cFor instance the\u00a0<a href=\"https:\/\/www.birdatlas.bc.ca\/accounts\/speciesaccount.jsp?sp=COHA&amp;lang=en\">Cooper\u2019s Hawk<\/a>. I didn\u2019t see that. If it hadn\u2019t been for Donna we might have missed that and it was the only Cooper\u2019s Hawk on the count.\u201d<\/p>\n<figure class=\"wp-block-image size-large\"><img class=\"wp-image-83369\" src=\"https:\/\/cortescurrents.ca\/wp-content\/uploads\/2020\/02\/DSC09991-800x533.jpeg\" alt=\"\" width=\"800\" height=\"533\" \/><figcaption><em>2018 Bird Count \u2013 Courtesy Cortes Island Museum And Archives<\/em><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>By Roy L Hales When you talk about Cortes Island\u2019s population, most of us think of humans but there is an even larger avian population. The\u00a0Cortes museum\u00a0has been taking an annual\u00a0Christmas Bird Count since 2001. There were 38 participants this year. Most were in five groups, but there were also a number of people who&hellip;<\/p>\n","protected":false},"author":34,"featured_media":8439,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[222],"tags":[970],"radio":[252],"origine":[280,266,231],"acf":[],"_links":{"self":[{"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/posts\/8435"}],"collection":[{"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/users\/34"}],"replies":[{"embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/comments?post=8435"}],"version-history":[{"count":0,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/posts\/8435\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/media\/8439"}],"wp:attachment":[{"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/media?parent=8435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/categories?post=8435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/tags?post=8435"},{"taxonomy":"radio","embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/radio?post=8435"},{"taxonomy":"origine","embeddable":true,"href":"https:\/\/canada-info.ca\/en\/wp-json\/wp\/v2\/origine?post=8435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}