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Slate-colored Fox Sparrow

A species of Fox Sparrows
Scientific name : Passerella schistacea Genus : Fox Sparrows

Slate-colored Fox Sparrow, A species of Fox Sparrows
Botanical name: Passerella schistacea
Genus: Fox Sparrows
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Description

Slate-colored Fox Sparrow (Passerella schistacea) Photo By ALAN SCHMIERER , used under CC-ZERO /Cropped and compressed from original

Description

The slate-colored fox sparrow (Passerella (iliaca) schistacea) group comprises the Rocky Mountain taxa in the genus Passerella. It is currently classified as a "subspecies group" within the fox sparrows pending a more-thorough genetic assay of all forms. It has long been suspected to be a separate evolutionary lineage due to morphological distinctness (Swarth 1920). More recently, it has been split into the present clade and the thick-billed fox sparrow. These have quite similar plumage, but can be readily distinguished according to mtDNA sequence and haplotype data (Zink 1994). However, these results were considered tentative (Rising & Beadle 1996) until more molecular data and apparent lack of wide-ranging hybridization coupled with ecological differences and adaptations led to confirmation of their distinctiveness (Zink & Kessen 1999); this group appears to be most closely related to the red fox sparrows (Zink & Weckstein 2003 contra Zink 1996), judging from biogeography. It breeds in relatively short willow habitats in montane regions from the interior of northwest British Columbia to Nevada and eastern California (Rising & Beadle 1996). It is a tiny-billed bird with a gray head and mantle, brown wings, brown breast streaks, and a russet tail.
Slate-colored Fox Sparrow (Passerella schistacea) Slate-colored Fox Sparrow (Passerella schistacea) Photo By ALAN SCHMIERER , used under CC-ZERO /Cropped and compressed from original
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