{"id":1315,"date":"2011-02-04T13:05:00","date_gmt":"2011-02-04T20:05:00","guid":{"rendered":"http:\/\/featheredphotography.wordpress.com\/?p=1315"},"modified":"2012-05-06T16:33:40","modified_gmt":"2012-05-06T22:33:40","slug":"handedness-in-short-eared-owls","status":"publish","type":"post","link":"https:\/\/featheredphotography.com\/blog\/2011\/02\/04\/handedness-in-short-eared-owls\/","title":{"rendered":"Handedness in Short-eared Owls"},"content":{"rendered":"<p>Last summer Mia and I spent four days photographing a family of Short-eared Owls in Red Rock Lakes National Wildlife Refuge.\u00a0 There were two\u00a0baby owls in a nest under a sagebrush guarded over constantly by the female while the male hunted and brought in food.\u00a0\u00a0 That food in every\u00a0instance that we saw was\u00a0a vole\u00a0(mouse-like rodent).\u00a0\u00a0Many of the\u00a0photos I took were of the male in flight, returning to the area of the nest\u00a0with\u00a0a vole in his talons.<\/p>\n<p style=\"text-align: center;\">\n<p><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1316\" data-permalink=\"https:\/\/featheredphotography.com\/blog\/2011\/02\/04\/handedness-in-short-eared-owls\/short-eared-owl-8097\/\" data-orig-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097.jpg\" data-orig-size=\"900,594\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Male with vole \" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097.jpg\" class=\"aligncenter size-full wp-image-1316\" title=\"Male with vole \" src=\"http:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097.jpg\" alt=\"Male with vole\" width=\"900\" height=\"594\" srcset=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097.jpg 900w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097-300x198.jpg 300w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097-150x99.jpg 150w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-8097-400x264.jpg 400w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/p>\n<p style=\"text-align: center;\"><em>Male with vole<\/em><\/p>\n<p style=\"text-align: left;\">It wasn&#8217;t until I returned home and began processing the images that I began to notice that the male always seemed to carry the vole in its left foot.\u00a0 This piqued my curiosity about something I&#8217;d never considered &#8211; do some birds show &#8220;handedness&#8221; &#8211; the preference of using one limb as opposed to the other?\u00a0 Could this male owl, or perhaps all Short-eared Owls, be left-&#8220;handed&#8221;?<\/p>\n<p style=\"text-align: left;\">\n<p style=\"text-align: left;\">\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1318\" data-permalink=\"https:\/\/featheredphotography.com\/blog\/2011\/02\/04\/handedness-in-short-eared-owls\/short-eared-owl-7866\/\" data-orig-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866.jpg\" data-orig-size=\"900,754\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Once again, carrying the vole in the left talon\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866.jpg\" class=\"aligncenter size-full wp-image-1318\" title=\"Once again, carrying the vole in the left talon\" src=\"http:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866.jpg\" alt=\"Once again, carrying the vole in the left talon\" width=\"900\" height=\"754\" srcset=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866.jpg 900w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866-300x251.jpg 300w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866-150x125.jpg 150w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7866-400x335.jpg 400w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/p>\n<p style=\"text-align: center;\"><em>\u00a0\u00a0Once again, carrying the vole in the left foot<\/em><\/p>\n<p style=\"text-align: left;\">So I decided to do an inventory of my images of these birds to see what would turn up.\u00a0 After culling my photos of these owls from this trip I had 271 photos to go through.\u00a0 Most of those were flight shots of the male and in more than half of them he was carrying a vole.\u00a0 My goal was to try to determine how many &#8220;sorties&#8221; he made with a vole that I had photographed (I often got multiple shots of the male with the same vole in the same sortie) and determine what percentage of the time he carried the vole in each foot, right or left.\u00a0 As\u00a0I reviewed the photos I used the\u00a0digital time stamp embedded in each image file to determine where one sortie began and another ended.<\/p>\n<p style=\"text-align: left;\">\n<p style=\"text-align: left;\">\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1319\" data-permalink=\"https:\/\/featheredphotography.com\/blog\/short-eared-owl-7866-2\/\" data-orig-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-78661.jpg\" data-orig-size=\"900,754\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Once again, carrying the vole in the left talon\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-78661.jpg\" class=\"aligncenter size-full wp-image-1319\" title=\"Once again the vole is in the left talon\" src=\"http:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7133.jpg\" alt=\"Once again the vole is in the left talon\" width=\"900\" height=\"668\" \/><\/p>\n<p style=\"text-align: center;\"><em>In the left\u00a0foot again<\/em><\/p>\n<p>It turns out that I had saved images from 13 sorties by the male where I could determine without question (in at least one of the photos in that sequence)\u00a0which\u00a0foot the vole was being carried in.\u00a0 In some of the image sequences I couldn&#8217;t tell for sure which\u00a0foot was being used so I didn&#8217;t include those in my tabulations.<\/p>\n<p style=\"text-align: center;\">\n<p>\u00a0<a href=\"http:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1321\" data-permalink=\"https:\/\/featheredphotography.com\/blog\/2011\/02\/04\/handedness-in-short-eared-owls\/short-eared-owl-7878\/\" data-orig-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878.jpg\" data-orig-size=\"900,643\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"And again&amp;#8230;\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878.jpg\" class=\"aligncenter size-full wp-image-1321\" title=\"And again...\" src=\"http:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878.jpg\" alt=\"And again...\" width=\"900\" height=\"643\" srcset=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878.jpg 900w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878-300x214.jpg 300w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878-150x107.jpg 150w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7878-400x285.jpg 400w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><em>And again&#8230;<\/em><\/p>\n<p style=\"text-align: left;\">The results:<\/p>\n<ul>\n<li>\n<div style=\"text-align: left;\">In 12 of the 13 sorties the vole was carried in the left foot<\/div>\n<\/li>\n<li>\n<div style=\"text-align: left;\">In 1 of the 13 sorties the owl<em> appears <\/em>to be carrying the vole it its right\u00a0foot early on in the sequence (though I can&#8217;t be absolutely\u00a0sure) and then later photos in the same sequence show the vole in the left foot.\u00a0 The bird must have transferred the vole from foot to foot\u00a0in mid-flight which might still demonstrate a preference for the left foot.<\/div>\n<\/li>\n<\/ul>\n<p style=\"text-align: left;\">These results would seem to indicate a strong preference by this male for the left foot when carrying voles in spite of the relatively low sample size of 13.\u00a0 I&#8217;m very curious if this is simply a trait of this individual bird or if it&#8217;s possible that many or most Short-eared Owls are left-handed\u00a0but have been able to find no other information on the subject for this species.\u00a0 However, recent research does indicate that most parrot species are left-handed\u00a0&#8211; the Cockatiel being the exception.<\/p>\n<p style=\"text-align: left;\">\n<p style=\"text-align: left;\">\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1323\" data-permalink=\"https:\/\/featheredphotography.com\/blog\/2011\/02\/04\/handedness-in-short-eared-owls\/short-eared-owl-7907\/\" data-orig-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907.jpg\" data-orig-size=\"900,701\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Female carrying a vole\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907.jpg\" class=\"aligncenter size-full wp-image-1323\" title=\"Female carrying a vole\" src=\"http:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907.jpg\" alt=\"Female carrying a vole\" width=\"900\" height=\"701\" srcset=\"https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907.jpg 900w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907-300x233.jpg 300w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907-150x116.jpg 150w, https:\/\/featheredphotography.com\/blog\/wp-content\/uploads\/2011\/02\/short-eared-owl-7907-400x311.jpg 400w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/p>\n<p style=\"text-align: center;\"><em>\u00a0Female carrying a vole<\/em><\/p>\n<p style=\"text-align: left;\">I did get one photo of the female carrying a vole.\u00a0 Typically she would wait in the nest for the male to deliver the meal.\u00a0 He would always land on a nearby perch with the vole for a short time before bringing the vole to the female and\u00a0babies.\u00a0 Occasionally he would wait too long and the female would become impatient and call to him in an obvious attempt to\u00a0get him to speed up the delivery.\u00a0 On one occasion she ran out of patience, flew out of the nest to the male, retrieved the vole and carried it back to the nest.\u00a0\u00a0 The photo above is of the female on that return trip to the nest.\u00a0\u00a0 You can see her brood patch on\u00a0her belly above the vole.<\/p>\n<p style=\"text-align: left;\">And yes, she was carrying the vole in her left foot!<\/p>\n<p style=\"text-align: left;\">One out of one in the\u00a0 case of the female is statistically meaningless of course but I still found it interesting and it remains that in the case of both birds collectively these\u00a0owls virtually always and perhaps without exception carried the vole in their left foot.\u00a0 I find that fascinating!<\/p>\n<p style=\"text-align: left;\">Ron\u00a0\u00a0<em>\u00a0<\/em><\/p>\n<p style=\"text-align: center;\"><em>\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Last summer Mia and I spent four days photographing a family of Short-eared Owls in Red Rock Lakes National Wildlife Refuge.\u00a0 There were two\u00a0baby owls in a nest under a sagebrush guarded over constantly by the female while the male hunted and brought in food.\u00a0\u00a0 That food in every\u00a0instance that we saw was\u00a0a vole\u00a0(mouse-like rodent).\u00a0\u00a0Many of the\u00a0photos I took were of the male in flight, returning to the area of the nest\u00a0with\u00a0a vole in his talons. Male with vole It wasn&#8217;t until I returned home and began processing the images that I began to notice that the male always seemed to carry the vole in its left foot.\u00a0 This piqued my curiosity about something I&#8217;d never considered &#8211; do some birds show &#8220;handedness&#8221; &#8211; the preference of using one limb as opposed to the other?\u00a0 Could this male owl, or perhaps all Short-eared Owls, be left-&#8220;handed&#8221;? \u00a0\u00a0Once again, carrying the vole in the left foot So I decided to do an inventory of my images of these birds to see what would turn up.\u00a0 After culling my photos of these owls from this trip I had 271 photos to go through.\u00a0 Most of those were flight shots of the male and in more than half of them he was carrying a vole.\u00a0 My goal was to try to determine how many &#8220;sorties&#8221; he made with a vole that I had photographed (I often got multiple shots of the male with the same vole in the same sortie) and determine what percentage of the time he&#8230;<\/p>\n<p> <a class=\"continue-reading-link\" href=\"https:\/\/featheredphotography.com\/blog\/2011\/02\/04\/handedness-in-short-eared-owls\/\"><span>Continue reading<\/span><i class=\"crycon-right-dir\"><\/i><\/a> <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[5,395,356],"tags":[41,90,109,137,146,170,199,211,228,244,263,279,315],"class_list":["post-1315","post","type-post","status-publish","format-standard","hentry","category-bird-oddities","category-miscellaneous","category-short-eared-owls","tag-baby","tag-cockatiel","tag-digital-time-stamp","tag-female","tag-flight","tag-handedness","tag-left-handed","tag-male","tag-nest","tag-parrot","tag-red-rock-lakes-national-wildlife-refuge","tag-short-eared-owl","tag-vole"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1zzJh-ld","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/posts\/1315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/comments?post=1315"}],"version-history":[{"count":0,"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/posts\/1315\/revisions"}],"wp:attachment":[{"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/media?parent=1315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/categories?post=1315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/featheredphotography.com\/blog\/wp-json\/wp\/v2\/tags?post=1315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}