{"id":4547,"date":"2019-03-17T10:00:51","date_gmt":"2019-03-17T09:00:51","guid":{"rendered":"http:\/\/birds-in-flight.net\/?p=4547"},"modified":"2019-10-11T09:57:22","modified_gmt":"2019-10-11T08:57:22","slug":"common-swift-apus-apus","status":"publish","type":"post","link":"https:\/\/birds-in-flight.net\/?p=4547","title":{"rendered":"Common Swift
Apus apus<\/em>"},"content":{"rendered":"

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

– near passerine, larger than Barn Swallow<\/a>, much longer and thinner wings
\n– diurnal migrant, always airborne thus nocturnal as well
\n– migrates singly or in small to medium, loose to rather dense flocks<\/p>\n

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

<\/a>
\nCommon Swift Apus a. apus<\/em>, AD<\/strong>
\nBIF1076, 12\/05\/2012, Besh Barmag, Azerbaijan, Michael Hei\u00df
\n– uni-coloured dark sooty
\n– compared to Pallid Swift<\/a> darker with slimmer body and smaller head<\/p>\n

\"BIF701_MPU_I1Q0015_140523_cswift-apus-1_d_leipzig\"<\/a>
\nCommon Swift Apus a. apus<\/em>, AD<\/strong>
\nBIF0701, 23\/05\/2014, Leipzig, Germany, Mathias Putze
\n– white throat patch more prominent but smaller than in Pallid Swift<\/a>
\n– wings more pointed<\/p>\n

<\/a>
\nCommon Swift Apus a. apus<\/em>, 1CY<\/strong>
\nBIF1078, 13\/08\/2014, Hohen Luckow, Roland Neumann
\n– underside of 1CY birds scalier than in AD therefore reminiscent of Pallid Swift<\/a>
\n– dark underwing coverts more contrasting than in Pallid Swift<\/a> in 1CY with pale tips<\/p>\n

<\/a>
\nCommon Swift Apus a. apus<\/em>, 1CY<\/strong>
\nBIF1079, 13\/08\/2014, Hohen Luckow, Roland Neumann
\nsame as BIF1078
\n– depending on the light condition the overall colour can vary from warm sooty to colder dark greyish brown (cf. e.g. BIF1077)<\/p>\n

\"\"<\/a>
\nCommon Swift Apus a. apus<\/em>, 1CY<\/strong>
\nBIF2848, 18\/08\/2018, North Sea offshore, Roland Neumann
\n– 1CY show pale fringed remiges and greater coverts (less distinct than in 1CY Pallid Swift<\/a>
\n– in good light contrast between brown inner wing and darker outer wing visible
\n– slimmer ‘hips’ than Pallid Swift<\/a><\/p>\n

<\/a>
\nCommon Swift Apus a. apus<\/em>, AD<\/strong>
\nBIF1077, 12\/05\/2012, Besh Barmag, Azerbaijan, Michael Hei\u00df
\n– wing tip more pointed than in Pallid Swift<\/a><\/p>\n

\"BIF702_MPU_I1Q0021_140523_cswift-apus-1_d_leipzig\"<\/a>
\nCommon Swift Apus a. apus<\/em>, AD<\/strong>
\nBIF0702, 23\/05\/2014, Leipzig, Germany, Mathias Putze<\/p>\n

\"BIF703_MPU_I8Z8357_100425_cswift-apus-FL_d_erfurt\"<\/a>
\nCommon Swift Apus a. apus<\/em>, AD<\/strong>
\nBIF0703, 25\/04\/2010, Erfurt, Germany, Mathias Putze<\/p>\n

\"BIF704_MPU_MG8090_090514_cswift-apus-1_d_north-sea\"<\/a>
\nCommon Swift Apus a. apus<\/em>, AD<\/strong>
\nBIF0704, 14\/05\/2009, North Sea, offshore, Mathias Putze<\/p>\n

\"BIF705_MPU_I1Q8192_140613_cswift-pekinensis-1_mng_choibalsan\"<\/a>
\nCommon Swift Apus apus pekinensis<\/em><\/strong>
\nBIF0705, 13\/06\/2014, Choibalsan, Mongolia, Mathias Putze
\n– ssp. pekinensis<\/em> is more similar to Pallid Swift<\/a>
\n– white forehead, white throat patch larger, underside more scaly and slightly paler overall than ssp. apus<\/em><\/p>\n

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

– most common a piercing, two-syllabled ‘scream’
\n– the first part is a sustained, fast<\/em> and narrow modulated overslur<\/em>
\n– the second part is a phrase<\/em> consisting of fast repeated similar vertical elements (trill<\/em>)
\n– the trill<\/em> is faster modulated<\/em> in males (narrower spaced)
\n– initial-, peak- and final frequency higher than in Pallid Swift<\/a><\/p>\nhttps:\/\/birds-in-flight.net\/wp-content\/uploads\/2016\/06\/BIF1951-1_PFR00443_1-10_080713_BIO_cswift-apus-F-M-S-WS_sn_lpz_khs_MS.mp3<\/a><\/audio>\n

\"\"<\/a>Common Swift Apus a. apus<\/em>, AD M F, call in flight<\/strong>
\nBIF1951, 13\/07\/2008, Leipzig, Germany, Patrick Franke<\/p>\n

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

Pallid Swift<\/a> (a) (v)
\nPacific Swift<\/a> (a) (v)
\nAlpine Swift<\/a> (v)
\nWhite-rumped Swift<\/a> (v)<\/p>\n

#nearpasserine<\/p>\n

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

>> GENERAL >>>>> – near passerine, larger than Barn Swallow, much longer and thinner wings – diurnal migrant, always airborne thus nocturnal as well – migrates singly or in small to medium, loose to rather dense flocks >> VISUAL ID >>>>> Common Swift Apus a. apus, AD BIF1076, 12\/05\/2012, Besh Barmag, Azerbaijan, Michael Hei\u00df – … Continue reading Common Swift
Apus apus<\/em><\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4552,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[165],"class_list":["post-4547","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apodidae","tag-common-swift-apus-apus"],"_links":{"self":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4547","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=4547"}],"version-history":[{"count":28,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4547\/revisions"}],"predecessor-version":[{"id":11276,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/4547\/revisions\/11276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/media\/4552"}],"wp:attachment":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}