{"id":4225,"date":"2018-02-28T12:08:24","date_gmt":"2018-02-28T11:08:24","guid":{"rendered":"http:\/\/birds-in-flight.net\/?p=4225"},"modified":"2020-01-31T16:13:44","modified_gmt":"2020-01-31T15:13:44","slug":"ferruginous-duck-aythya-nyroca","status":"publish","type":"post","link":"https:\/\/birds-in-flight.net\/?p=4225","title":{"rendered":"Ferruginous Duck
Aythya nyroca<\/em>"},"content":{"rendered":"

>> GENERAL >>>>><\/strong><\/p>\n

– small duck, smallest diving duck
\n– considerably smaller than Mallard<\/a>
\n– nocturnal migrant, diurnal movements
\n– migrates in small to medium flocks
\n– sometimes mixed with other ducks<\/p>\n

>> VISUAL ID >>>>><\/strong><\/p>\n

\"BIF743_MPU_I8Z5477_100621_ferduck-1-AD-F_hu_hortobagy\"<\/a>
\nFerruginous Duck Aythya nyroca<\/em>, F AD<\/strong>
\nBIF0743, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– rather small and compact diving duck
\n– dark bill
\n– F dark brown, with off-white belly
\n– largely white underwing with distinct dusky trailing edge and broad dark leading edge<\/p>\n

\"BIF742_MPU_I8Z5481_100621_ferduck-1-AD-F_hu_hortobagy\"<\/a>
\nFerruginous Duck Aythya nyroca<\/em>, F AD<\/strong>
\nBIF0742, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– back weakly mottled pale
\n– striking white wingbar narrowerest on secondaries
\n– dark trailing edge broadest on secondaries
\n– white wingbar only slightly fading to light grey towards wingtip (more grey in wingtip in F Tufted Duck<\/a>)<\/p>\n

\"BIF744_MPU_I8Z5463_100621_ferduck-1-AD-F_hu_hortobagy\"<\/a>
\nFerruginous Duck Aythya nyroca<\/em>, F AD<\/strong>
\nBIF0744, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– forehead not as steep as in Tufted Duck but less sloping than in Common Pochard
\n– F shows pale area of variable extent at the base of the bill<\/p>\n

\"BIF741_MPU_I8Z5252_100621_ferduck-1-AD-M_hu_hortobagy\"<\/a>
\nFerruginous Duck Aythya nyroca<\/em>, M AD<\/strong>
\nBIF0741, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– M with more dark chestnut tone than F
\n– underwing with broader dark leading egde than Tufted Duck
\n– belly and vent are white<\/p>\n

\"BIF740_MPU_I8Z4917_100621_ferduck-1-AD-M_hu_hortobagy\"<\/a>
\nFerruginous Duck Aythya nyroca<\/em>, M AD<\/strong>
\nBIF0740, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– back and upperwing coverts unicoloured dark brown
\n– striking white iris
\n– head appears rounder than in F<\/p>\n

\"BIF745_MPU_I8Z4896_100621_ferduck-FL-AD-M-F_hu_hortobagy\"<\/a>
\nFerruginous Duck Aythya nyroca<\/em>, M F AD<\/strong>
\nBIF0745, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– at distance appears unicoloured dark brown with striking white wingbar and small white belly<\/p>\n

\"\"<\/a>
\nCommon Pochard A. ferina<\/em> X Ferruginous Duck A. nyroca<\/em> hybrid (uppermost right)<\/strong>
\nCommon Pochard Aythya ferina<\/em>, M F<\/strong>
\n– at first sight very similar to pure Ferruginous Duck, but note orangey eye, wingbar shows extensive grey tones, ground colour too rufous <\/p>\n

>> ACOUSTIC ID >>>>><\/strong><\/p>\n

– usually nonvocal during migration<\/p>\n

>> COMPARISON SPECIES >>>>><\/strong><\/p>\n

Greater Scaup (v)
\nTufted Duck<\/a>
\nRed-crested Pochard<\/a>
\nCommon Pochard<\/a>
\nRing-necked Duck<\/p>\n

#waterbird #waterfowl #wildfowl<\/p>\n

#ornithology #birdmigration #birdID #birdguide #birding #birdwatching #birdsound #westernpalearctic #europe #vismig #flightcalls #vismig #flightcalls #middleeast #northernafrica #workinprogress<\/p>\n","protected":false},"excerpt":{"rendered":"

>> GENERAL >>>>> – small duck, smallest diving duck – considerably smaller than Mallard – nocturnal migrant, diurnal movements – migrates in small to medium flocks – sometimes mixed with other ducks >> VISUAL ID >>>>> Ferruginous Duck Aythya nyroca, F AD BIF0743, 21\/06\/2010, Hortob\u00e1gy, Hungary, Mathias Putze – rather small and compact diving duck … Continue reading Ferruginous Duck
Aythya nyroca<\/em><\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4230,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,288],"tags":[150],"class_list":["post-4225","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anatidae","category-ducks","tag-ferruginous-duck-aythya-nyroca"],"_links":{"self":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4225"}],"version-history":[{"count":14,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4225\/revisions"}],"predecessor-version":[{"id":11581,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4225\/revisions\/11581"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/media\/4230"}],"wp:attachment":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4225"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}