{"id":4367,"date":"2018-02-28T09:58:37","date_gmt":"2018-02-28T08:58:37","guid":{"rendered":"http:\/\/birds-in-flight.net\/?p=4367"},"modified":"2020-06-14T20:32:42","modified_gmt":"2020-06-14T19:32:42","slug":"common-pochard-aythya-ferina","status":"publish","type":"post","link":"https:\/\/birds-in-flight.net\/?p=4367","title":{"rendered":"Common Pochard
Aythya ferina<\/em>"},"content":{"rendered":"

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

– medium-sized duck, smaller than Mallard<\/a>
\n– probably diurnal migration but strategy not well understood
\n– local moving small to medium flocks in formation<\/p>\n

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

\"BIF855_MPU_I8Z5246_100730_cpoch-1-AD-F_hu_hortobagy\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, F BREED<\/strong>
\nBIF0855, 30\/07\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– F in BREED with all black bill
\n– flanks brown patterned
\n– largely white underwing but only primaries with distict dark tips (\u2192 Ferruginous Duck<\/a>, Tufted Duck<\/a>)
\n– resembles F Ferruginous Duck<\/a> but shows less contrasting and larger light greyish belly
\n\"BIF854_MPU_I8Z5076_100730_cpoch-1-AD-F_hu_hortobagy\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, F<\/strong>
\nBIF0854, 30\/07\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– F in BREED with pale scaly brown back and contrasting grey wings (grey back in NBREED AD F)
\n– compared to other Aythya<\/em> sp. with only weakly contrasting light grey wingbar
\n– dusky trailing edge to the wing comparatively narrow
\n\"BIF852_MPU_I8Z5657_100730_cpoch-1-AD-M_hu_hortobagy\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, M AD<\/strong>
\nBIF0852, 30\/07\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– neatly patterned with rufous head and black breast with sharp border to light grey belly
\n– underwing whitish exept for dark tipped primaries
\n– red iris does not stand out against rufous head
\n– BREED M with usually all dark bill (pale subterminal band in NBREED)
\n\"BIF853_MPU_I8Z4898_100730_cpoch-1-AD-M_hu_hortobagy\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, M AD<\/strong>
\nBIF0853, 30\/07\/2010, Hortob\u00e1gy, Hungary, Mathias Putze
\n– upperwing and back unicoloured light grey, sharply contrasting with black neck
\n– the typical Aythya wingbar is indistinct, especially in M,
\n– only primaries have distinctly darker tips
\n– primary coverts slightly darker grey
\n– characteristic head shape with gently sloping forehead
\n\"BIF856_MPU_I1Q2713_131019_cpoch-FL-M-F_d_wermsdorf\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, M F<\/strong>
\nBIF0856, 19\/10\/2013, Wermsdorf, Germany, Mathias Putze
\n– in AD F the face is usually slightly paler than nape and neck
\n– IMM birds (2nd and 3rd from right) with darker upperwing and darker brown head and neck
\n– note variable bill pattern
\n\"BIF857_MPU_PMA6509_110530_cpoch-AD-F-M-F_male_female_hybrid-mit-ferduc_mongolia_buir-nuur\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, M F<\/strong>
\nCommon Pochard A ferina<\/em> X Ferruginous Duck A nyroca<\/em> hybrid<\/strong>
\nBIF0857, 30\/05\/2011, Buir Nuur, Mongolia, Mathias Putze
\n– hybrid (uppermost to the right) shows intermediate features from both parents; for more detailed description see Ferruginous Duck<\/a>
\n\"BIF851-2_MPU_I8Z2012_090727_tuftduck-FL_cpoch-FL_d_havelland\"<\/a>
\nCommon Pochard Aythya ferina<\/em> (two right-hand and centre)<\/strong>
\nTufted Duck Aythya fuligula<\/em><\/strong>
\nBIF0851, 27\/07\/2009, Havelland, Germany, Mathias Putze
\n– silhouette appears more elongated than Tufted Duck<\/a>
\n– note different head shape
\n\"BIF858-1_MPU_110224_PMA4164_110224_cpoch-FL_tuftduck-2-M_d_havelland\"<\/a>
\nCommon Pochard Aythya ferina<\/em><\/strong>
\nTufted Duck Aythya fuligula<\/em><\/strong>
\nBIF0858, 24\/02\/2011, Havelland, Germany, Mathias Putze
\n– at distance and against sky not easy to identify in mixed flocks, but note the more elongated structure
\n\"\"<\/a>
\nTufted Duck<\/strong> Aythya fuligula<\/strong><\/em>
\nCommon Pochard Aythya ferina<\/em><\/strong>
\nBIF1438, 14\/12\/2014, R\u00fcgen, Germany, Mathias Putze
\n– at greater distance back and upperwing appear uniformly grey
\n\"\"<\/a>
\nBIF1606, 09\/06\/2014, Tasch Gai Nuur, Mongolia, Mathias Putze
\nCommon Pochard Aythya ferina<\/em><\/strong>
\nCommon Goldeneye Bucephala c. clangula<\/em><\/strong><\/p>\nhttps:\/\/birds-in-flight.net\/wp-content\/uploads\/2018\/02\/BIF2645-1_PFR09925_1-10_140330_BIO_cpoch-FL-TOC_d_sn_grabschue-see_REF-S_C.mp3<\/a><\/audio>\n

\"\"<\/a>
\nCommon Pochard Aythya ferina<\/em>, AD F, calls in flight<\/strong>
\nBIF2645, 30\/03\/2014, Grabsch\u00fctzer See, Germany, Patrick Franke<\/p>\n

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

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

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

Red-crested Pochard<\/a> (v)
\nFerruginous Duck<\/a> (v)<\/p>\n

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

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

>> GENERAL >>>>> – medium-sized duck, smaller than Mallard – probably diurnal migration but strategy not well understood – local moving small to medium flocks in formation >> VISUAL ID >>>>> Common Pochard Aythya ferina, F BREED BIF0855, 30\/07\/2010, Hortob\u00e1gy, Hungary, Mathias Putze – F in BREED with all black bill – flanks brown patterned … Continue reading Common Pochard
Aythya ferina<\/em><\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4372,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,288],"tags":[156],"class_list":["post-4367","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anatidae","category-ducks","tag-common-pochard-aythya-ferina"],"_links":{"self":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4367","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=4367"}],"version-history":[{"count":19,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4367\/revisions"}],"predecessor-version":[{"id":11583,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4367\/revisions\/11583"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/media\/4372"}],"wp:attachment":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}