{"id":8059,"date":"2021-07-30T21:35:33","date_gmt":"2021-07-30T20:35:33","guid":{"rendered":"http:\/\/birds-in-flight.net\/?p=8059"},"modified":"2021-08-01T15:33:52","modified_gmt":"2021-08-01T14:33:52","slug":"red-breasted-merganser-mergus-serrator","status":"publish","type":"post","link":"https:\/\/birds-in-flight.net\/?p=8059","title":{"rendered":"Red-breasted Merganser
Mergus serrator<\/em>"},"content":{"rendered":"

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

– medium-sized anatid, about size of Mallard<\/a> but slimmer
\n– diurnal migrant, probably also nocturnal
\n– migrates pairwise or in small to medium flocks in formation<\/p>\n

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

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, AD M<\/strong>
\nBIF1966, 01\/02\/2017, Darss, Germany, Martin Grimm
\n– slim silhouette with long neck and thin bill
\n– white inner wing with two thin black lines, broad black leading edge and black hand -> Goosander<\/a>\u00a0(BIF 1630)<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, AD M<\/strong>
\nBIF1967, 01\/02\/2017, Darss, Germany, Martin Grimm
\n– red bill slightly upcurved without hook
\n–\u00a0flanks greyish (upper flank black with white patches)
\n– feet almost reach tail tip -> Goosander<\/a>\u00a0(BIF 1631)<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, AD M<\/strong>
\nBIF2893, 30\/03\/2018, Rerik, Germany, Roland Neumann
\n– black head
\n– distinct white collar and dark streaked redish-brown upper breast
\n– white underwing (black in Common Goldeneye<\/a>) with translucent secondaries<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, AD M F<\/strong>
\nBIF2894, 30\/03\/2018, Rerik, Germany, Roland Neumann<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, F AD (two left), M AD, M 2CY (right)<\/strong>
\nBIF1972, 15\/03\/2017, K\u00fchlungsborn, Roland Neumann
\n– M 2CY head black-brown patterned, upper flanks darker than F
\n– upperwing pattern of 2CY M same as F with fine black line in white wing patch (usually missing in F -> Goosander<\/a>)
\n– no contrast between hand and arm<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, F AD (two left), M AD, M 2CY (right)<\/strong>
\nBIF1971, 15\/03\/2017, K\u00fchlungsborn, Roland Neumann
\nsame as BIF1972
\n– brown head of F diffusely merging into grey neck (sharp contrast in F -> Goosander<\/a>)<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, 5 M AD<\/strong>
\nBIF1973, 15\/03\/2017, K\u00fchlungsborn, Roland Neumann
\n– at greater distance the white collar is the most striking feature<\/p>\n

\"\"<\/a>
\nRed-breasted Merganser Mergus serrator<\/em>, 5 M ECLIPSED<\/strong>
\nBIF1638, 23\/09\/2010, Baltic Sea, Germany, Mathias Putze
\n– like F but diagnostic M wing pattern (compare BIF1966)<\/p>\n

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

calls during migration not yet sound recorded<\/em><\/p>\n

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

Goosander<\/a> (v)
\nCommon Goldeneye<\/a> (v)
\nCommon Shelduck<\/a> (v)
\nCommon Eider<\/a> (v)<\/p>\n

#waterbird #waterfowl #wildfowl<\/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 anatid, about size of Mallard but slimmer – diurnal migrant, probably also nocturnal – migrates pairwise or in small to medium flocks in formation >> VISUAL ID >>>>> Red-breasted Merganser Mergus serrator, AD M BIF1966, 01\/02\/2017, Darss, Germany, Martin Grimm – slim silhouette with long neck and thin bill – … Continue reading Red-breasted Merganser
Mergus serrator<\/em><\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":8061,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,288],"tags":[269],"class_list":["post-8059","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anatidae","category-ducks","tag-red-breasted-merganser-mergus-serrator"],"_links":{"self":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/8059","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=8059"}],"version-history":[{"count":18,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/8059\/revisions"}],"predecessor-version":[{"id":11601,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/8059\/revisions\/11601"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/media\/8061"}],"wp:attachment":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}