{"id":2533,"date":"2019-03-17T10:00:11","date_gmt":"2019-03-17T09:00:11","guid":{"rendered":"http:\/\/birds-in-flight.net\/?p=2533"},"modified":"2019-10-08T14:22:03","modified_gmt":"2019-10-08T13:22:03","slug":"pacific-swift-apus-pacificus","status":"publish","type":"post","link":"https:\/\/birds-in-flight.net\/?p=2533","title":{"rendered":"Pacific Swift
Apus pacificus<\/em>"},"content":{"rendered":"

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

– small near-passerine, larger than sparrow, same size as Common Swift<\/a>
\n– very rare vagrant to WP, Asian origin
\n– diurnal migrant, always airborne thus nocturnal as well
\n– migrates singly or in small, very loose flocks<\/p>\n

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

\"BIF421_MPU_PMA2485_110521_pswift_mng_khlerlen-gol\"<\/a>
\nPacific Swift Apus p. pacificus<\/em><\/strong>
\nBIF0421, 21\/05\/2011, Khlerlen Gol, Mongolia, Mathias Putze
\n– tail slightly longer than in Common Swift<\/a>
\n– blackish tail and uppertail coverts contrasting to sooty body and wings
\n– white rump extending to rear flanks (more restricted to the back in White-rumped Swift)<\/p>\n

\"BIF524_MPU_I1Q8136_140613_pswift-pacificus_mng_choibalsan\"<\/a>
\nPacific Swift Apus p. pacificus<\/em><\/strong>
\nBIF0524, 13\/06\/2014, Choibalsan, Mongolia, Mathias Putze
\ncompared to Common Swift<\/a>:
\n– underside scalier
\n– longer tail with deeper fork
\n– white throat patch larger but more diffuse (well defined in White-rumped Swift)<\/p>\n

\"BIF525_MPU_I1Q8179_140613_pswift-pacificus_mng_choibalsan\"<\/a>
\nPacific Swift Apus p. pacificus<\/em><\/strong>
\nBIF0525, 13\/06\/2014, Choibalsan, Mongolia, Mathias Putze
\n– secondaries without white trailing edge (shown by White-rumped Swift)<\/p>\n

\"\"<\/a>
\nPacific Swift Apus p. pacificus<\/em><\/strong>
\nBIF0526, 13\/06\/2014, Choibalsan, Mongolia, Mathias Putze
\n– if only seen from below it resembles Pallid Swift<\/a>, but note darker colour, more contrasting underwing coverts and more pointed wings<\/p>\n

\"\"<\/a>
\nPacific Swift Apus p.<\/em> pacificus<\/em><\/strong>
\nBIF0422, 06\/06\/2011, Ichchet, Mongolia, Mathias Putze<\/p>\n

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

– most common a two-syllabled<\/em> piercing ‘scream’
\n– the first part is a sustained<\/em>, fine modulated slight\u00a0overslur<\/em> -> Common Swift<\/a> -> Pallid Swift<\/a>
\n– the second part is a phrase<\/em> of fast similar vertical elements (trill)
\n– the trill is narrower spaced in males (faster)<\/p>\nhttps:\/\/birds-in-flight.net\/wp-content\/uploads\/2016\/06\/BIF0423-1_PFR09349_1-10_130604_BIO_pswift-pacificus-1-F-FC_mng_rec02_REF-S_C-B.mp3<\/a><\/audio>\n

\"\"<\/a>
\nPacific Swift Apus p<\/em> pacificus<\/em>, AD F, call in flight<\/strong>
\nBIF0423, 07\/06\/2013, Tsetserleg, Mongolia, Patrick Franke<\/p>\nhttps:\/\/birds-in-flight.net\/wp-content\/uploads\/2016\/06\/BIF0424-1_PFR09348_1-10_130604_BIO_pswift-pacificus-1-M-FC_mng_rec02_REF-S_A.mp3<\/a><\/audio>\n

\"\"<\/a>
\nPacific Swift Apus p<\/em> pacificus<\/em>, AD M, call in flight<\/strong>
\nBIF0424, 07\/06\/2013, Tsetserleg, Mongolia, Patrick Franke<\/p>\n

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

Common Swift<\/a> (a) (v)
\nPallid 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 >>>>> – small near-passerine, larger than sparrow, same size as Common Swift – very rare vagrant to WP, Asian origin – diurnal migrant, always airborne thus nocturnal as well – migrates singly or in small, very loose flocks >> VISUAL ID >>>>> Pacific Swift Apus p. pacificus BIF0421, 21\/05\/2011, Khlerlen Gol, Mongolia, Mathias … Continue reading Pacific Swift
Apus pacificus<\/em><\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3322,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[115],"class_list":["post-2533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apodidae","tag-pacific-swift-apus-pacificus"],"_links":{"self":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/2533","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=2533"}],"version-history":[{"count":22,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/2533\/revisions"}],"predecessor-version":[{"id":11271,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/posts\/2533\/revisions\/11271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=\/wp\/v2\/media\/3322"}],"wp:attachment":[{"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/birds-in-flight.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}