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

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Summary

Description
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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Author Gordon Leggett
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Photo: Gordon Leggett / Wikimedia Commons / 
CC BY-SA 4.0
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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Captions

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

depicts

crow

Northwestern Crow

inception

29 April 2014

coordinates of the point of view

49°7'27.221"N, 123°11'10.932"W

exposure time

0.00125 second

focal length

200 millimetre

media type

image/jpeg

checksum

462335c5a3e8666d78e76d0859267dbb202fe1ea

determination method or standard: SHA-1

data size

8,398,440 byte

height

3,461 pixel

width

5,192 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current21:52, 19 August 2021Thumbnail for version as of 21:52, 19 August 20215,192 × 3,461 (8.01 MB)GRDN711Lowered highlight in front slightly. Crow type is Northwestern crow (Corvus brachyrhynchos caurinus).
20:39, 12 October 2019Thumbnail for version as of 20:39, 12 October 20195,192 × 3,461 (8.54 MB)GRDN711User created page with UploadWizard

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