{"id":8778,"date":"2018-02-25T07:45:05","date_gmt":"2018-02-24T18:45:05","guid":{"rendered":"http:\/\/www.tonywhitehead.com\/wildlight\/?p=8778"},"modified":"2018-02-22T21:47:12","modified_gmt":"2018-02-22T08:47:12","slug":"grey-duck","status":"publish","type":"post","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/8778","title":{"rendered":"Grey Duck"},"content":{"rendered":"<figure id=\"attachment_8781\" aria-describedby=\"caption-attachment-8781\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/Grey-Duck_D805731-web.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8781\" src=\"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/Grey-Duck_D805731-web.jpg?resize=800%2C533&#038;ssl=1\" alt=\"Grey Duck (Anas superciliosa)\" width=\"800\" height=\"533\" srcset=\"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/Grey-Duck_D805731-web.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/Grey-Duck_D805731-web.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/Grey-Duck_D805731-web.jpg?resize=768%2C512&amp;ssl=1 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-8781\" class=\"wp-caption-text\">Grey Duck (<em>Anas superciliosa<\/em>)<\/figcaption><\/figure>\n<p>Grey Duck (<em>Anas supercilliosa<\/em>) is the New Zealand name for the Pacific Black Duck. It is our native, mallard sized member of the genus, Anas. Our smaller teals, Grey Teal (<em>Anas gracilis<\/em>), Brown Teal (<em>Anas chlorotis<\/em>), Auckland Island Teal (<em>Anas aucklandica<\/em>) and Campbell Island Teal (<em>Anas nesiotis<\/em>) all belong to the same genus but the Grey Duck hybridises with the introduced Mallard (<em>Anas platyrhyncos<\/em>) which has led to it being classified&nbsp;nationally critical.<\/p>\n<figure id=\"attachment_8783\" aria-describedby=\"caption-attachment-8783\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0084-web.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8783\" src=\"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0084-web.jpg?resize=800%2C533&#038;ssl=1\" alt=\"Pacific Black Duck photographed in Brisbane, Queensland\" width=\"800\" height=\"533\" srcset=\"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0084-web.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0084-web.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0084-web.jpg?resize=768%2C512&amp;ssl=1 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-8783\" class=\"wp-caption-text\">Pacific Black Duck photographed in Brisbane, Queensland, showing darker colouration.<\/figcaption><\/figure>\n<p>I had always noticed that the birds in Australia seemed darker with much clearer facial lines and put this down to <a href=\"https:\/\/en.wikipedia.org\/wiki\/Gloger%27s_rule\" target=\"_blank\" rel=\"noopener\">Gloger&#8217;s rule<\/a> which suggests that within a species , those in warmer, more humid areas have darker plumage than those living in cooler, drier areas. I had especially noticed this with White-faced Heron where the Queensland birds had darker more intensely coloured plumage than their New Zealand relatives. With the Grey Duck \/ Pacific Black Duck, I still think that this is a contributing factor but suspect that the highly hybridised New Zealand population makes it hard for us to see a true Grey Duck in New Zealand. Reviewing my photographic archives the one image that I recalled as being a good example of a Grey Duck still shows some speckling of it&#8217;s facial stripes and greenish rather than leaden grey bill, &nbsp;suggesting possible Mallard genes. Other features that can give away Mallard influence are any orange colouration on the legs, blue speculum or anterior pale bar on speculum.&nbsp;<\/p>\n<p>For more information on ducks in New Zealand see <a href=\"http:\/\/www.nzbirdsonline.org.nz\" target=\"_blank\" rel=\"noopener\">NZBirdsOnline<\/a>. Entries for <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/grey-teal\" target=\"_blank\" rel=\"noopener\">Grey Teal<\/a>, <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/auckland-island-teal\" target=\"_blank\" rel=\"noopener\">Auckland Island Teal<\/a>, <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/blue-duck\" target=\"_blank\" rel=\"noopener\">Blue Duck<\/a> and <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/mallard\" target=\"_blank\" rel=\"noopener\">Mallard<\/a> all use photos of mine as the species image. Follow these links for <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/grey-duck\" target=\"_blank\" rel=\"noopener\">Grey Duck<\/a>, <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/brown-teal\" target=\"_blank\" rel=\"noopener\">Brown Teal<\/a>, <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/campbell-island-teal\" target=\"_blank\" rel=\"noopener\">Campbell Island Teal<\/a> and <a href=\"http:\/\/www.nzbirdsonline.org.nz\/species\/new-zealand-scaup\" target=\"_blank\" rel=\"noopener\">Scaup<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Grey Duck (Anas supercilliosa) is the New Zealand name for the Pacific Black Duck. It is our native, mallard sized member of the genus, Anas. Our smaller teals, Grey Teal (Anas gracilis), Brown Teal (Anas chlorotis), Auckland Island Teal (Anas aucklandica) and Campbell Island Teal (Anas nesiotis) all belong to the same genus but the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3,29],"tags":[26,25,360,361,367,366,144,362,194,190,364,365,363],"class_list":["post-8778","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-birds","category-new-zealand","tag-bird-photography","tag-birds","tag-duck","tag-grey-duck","tag-hybrisation","tag-mallard","tag-new-zealand","tag-pacific-black-duck","tag-photo","tag-photography","tag-threatened-bird","tag-threatened-duck","tag-threatened-species","entry","has-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Grey Duck - WildLight Photography<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/8778\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Grey Duck - WildLight Photography\" \/>\n<meta property=\"og:description\" content=\"Grey Duck (Anas supercilliosa) is the New Zealand name for the Pacific Black Duck. It is our native, mallard sized member of the genus, Anas. 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How reliable is speculum colour for duck identification? The speculum is the bright iridescent coloured area on the secondary flight feathers of some ducks. In Mallards it is blue and in our native New Zealand Grey Duck (Pacific\u2026","rel":"","context":"In &quot;birds&quot;","block_context":{"text":"birds","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/category\/birds"},"img":{"alt_text":"Same individual Pacific Black Duck showing speculum grading from green to blue","src":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0046-web.jpg?fit=800%2C533&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0046-web.jpg?fit=800%2C533&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0046-web.jpg?fit=800%2C533&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/01\/BlackDuck_DSC0046-web.jpg?fit=800%2C533&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":12932,"url":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/12932","url_meta":{"origin":8778,"position":1},"title":"Okareka Evenings","author":"tony","date":"September 27, 2020","format":false,"excerpt":"Photographing ducks at Lake Okareka in evening light","rel":"","context":"In &quot;birds&quot;","block_context":{"text":"birds","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/category\/birds"},"img":{"alt_text":"Photo of Pair of resting T\u0113t\u0113\/Grey Teal and female Kuruwhengi\/Australasian Shoveler","src":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2020\/09\/GreyTeal-D85_5748-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2020\/09\/GreyTeal-D85_5748-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2020\/09\/GreyTeal-D85_5748-web.jpg?fit=960%2C640&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2020\/09\/GreyTeal-D85_5748-web.jpg?fit=960%2C640&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":14680,"url":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/14680","url_meta":{"origin":8778,"position":2},"title":"Auckland Island Teal Revisited","author":"tony","date":"October 17, 2021","format":false,"excerpt":"Auckland Island Teal female (Anas aucklandica) One of my goals with this second trip to the Subantarctics was to improve my archive of images of the endemic bird species. On the first trip I managed some lovely images of a male Auckland Island Teal, one of which is the featured\u2026","rel":"","context":"In &quot;birds&quot;","block_context":{"text":"birds","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/category\/birds"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/09\/AucklandIslandTeal-D85_8025-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/09\/AucklandIslandTeal-D85_8025-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/09\/AucklandIslandTeal-D85_8025-web.jpg?fit=960%2C640&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/09\/AucklandIslandTeal-D85_8025-web.jpg?fit=960%2C640&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":8972,"url":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/8972","url_meta":{"origin":8778,"position":3},"title":"Okareka update","author":"tony","date":"April 15, 2018","format":false,"excerpt":"Lake Okareka is one of my favourite local bird photography destinations. It is a short drive up the road and I can be there photographing within minutes of leaving home. Unfortunately I have not been too often in the past year. This has largely been due to abnormally high water\u2026","rel":"","context":"In &quot;birds&quot;","block_context":{"text":"birds","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/category\/birds"},"img":{"alt_text":"Pied Stilts resting in sweet Okareka light","src":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/04\/PiedStilts_DSC0518-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/04\/PiedStilts_DSC0518-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/04\/PiedStilts_DSC0518-web.jpg?fit=960%2C640&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2018\/04\/PiedStilts_DSC0518-web.jpg?fit=960%2C640&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":14861,"url":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/14861","url_meta":{"origin":8778,"position":4},"title":"Reunion with an Old Photography Friend","author":"tony","date":"October 18, 2021","format":false,"excerpt":"Reunion with an Old Photography Friend - 500mm f4 back from the dead","rel":"","context":"In &quot;birds&quot;","block_context":{"text":"birds","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/category\/birds"},"img":{"alt_text":"photo of a t\u0113t\u0113\/Grey Teal","src":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/10\/GreyTeal-D5C_9413-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/10\/GreyTeal-D5C_9413-web.jpg?fit=960%2C640&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/10\/GreyTeal-D5C_9413-web.jpg?fit=960%2C640&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2021\/10\/GreyTeal-D5C_9413-web.jpg?fit=960%2C640&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":886,"url":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/886","url_meta":{"origin":8778,"position":5},"title":"Bird Photography &#8211; Lake Okareka","author":"tony","date":"September 22, 2013","format":false,"excerpt":"Lake Okareka is one of my favourite \u00a0local bird photography venues. It is very convenient being just a few minutes from home but is also quite versatile with a number of bird species that are relatively uncommon. Regular species seen include Grey Teal, Shoveller, Pied Stilts, Dabchicks, White-faced Heron and\u2026","rel":"","context":"In &quot;birds&quot;","block_context":{"text":"birds","link":"https:\/\/www.tonywhitehead.com\/wildlight\/archives\/category\/birds"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2013\/09\/Stilt_D800199-web.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2013\/09\/Stilt_D800199-web.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2013\/09\/Stilt_D800199-web.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.tonywhitehead.com\/wildlight\/wp-content\/uploads\/2013\/09\/Stilt_D800199-web.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/posts\/8778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/comments?post=8778"}],"version-history":[{"count":0,"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/posts\/8778\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/media\/8781"}],"wp:attachment":[{"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/media?parent=8778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/categories?post=8778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tonywhitehead.com\/wildlight\/wp-json\/wp\/v2\/tags?post=8778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}