Fayl:2014-04-29 01 Northwestern crow (Corvus brachyrhynchos caurinus).jpg

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English: Northwestern crow (Corvus brachyrhynchos caurinus - hybrid intergrades between Corvus brachyrhynchos and Corvus caurinus species of the American crow), adult, at Steveston Harbor, British Columbia, Canada on April 29, 2014.

The original proposal of the Northwestern crow (Corvus brachyrhynchos caurinus) as a separate hybrid intergrade species was proposed in 2018. "Crows over a wide area in the west of British Columbia, Canada and the far northwest of Washington, USA, are hybrid intergrades between Corvus brachyrhynchos and Corvus caurinus (ref: Slager, D. L., et al. 2018. Cryptic and extensive hybridization between ancient lineages of American crows. BioRxiv preprint).

However, current 2021 taxonomy considers the northwestern crow as a geographic variation of the western crow (C. b. hesperis).

“C. b. caurinus (Baird, 1858) – northwestern crow: of the Pacific temperate rain forests was formerly considered a distinct species as C. caurinus, averaging smaller in size than other American crows with a distinctly hoarser call. It forms a hybrid swarm with American crow (sensu stricto) in coastal Washington and British Columbia. The American Ornithological Society lumped the northwestern crow with the American crow in 2020. It is now considered a geographic variation within C. b. hesperis.” – American crow - Wikipedia
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Muallif Gordon Leggett
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Photo: Gordon Leggett / Wikimedia Commons / 
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Photo: Gordon Leggett / Wikimedia Commons
Camera location49° 07′ 27,22″ N, 123° 11′ 10,93″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Northwestern crow (Corvus brachyrhynchos caurinus, now considered a geographic variation within the western crow, C. b. hesperis), adult, at Steveston Harbor, British Columbia, Canada

Items portrayed in this file

tasvirlangan ob'ekt

crow inglizcha

Northwestern Crow inglizcha

tashkil etilgan

29 Aprel 2014

coordinates of the point of view inglizcha

49°7'27.221"N, 123°11'10.932"W

captured with inglizcha

Nikon D7100 inglizcha

exposure time inglizcha

0,00125 soniya

f-number inglizcha

7,1

focal length inglizcha

200 millimetr

ISO speed inglizcha

200

MIME turi

image/jpeg

checksum inglizcha

462335c5a3e8666d78e76d0859267dbb202fe1ea

determination method inglizcha: SHA-1 inglizcha

data size inglizcha

8 398 440 Bayt

balandligi/bo'yi

3 461 piksel

width inglizcha

5 192 piksel

Fayl tarixi

Faylning biror paytdagi holatini koʻrish uchun tegishli sana/vaqtga bosingiz.

Sana/VaqtMiniaturaOʻlchamlariFoydalanuvchiIzoh
joriy21:52, 19-Avgust 202121:52, 19-Avgust 2021 dagi versiya uchun tasvir5 192 × 3 461 (8,01 MB)GRDN711Lowered highlight in front slightly. Crow type is Northwestern crow (Corvus brachyrhynchos caurinus).
20:39, 12-Oktyabr 201920:39, 12-Oktyabr 2019 dagi versiya uchun tasvir5 192 × 3 461 (8,54 MB)GRDN711User created page with UploadWizard

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