#timberline_sparrow
Timberline sparrow
Subspecies of bird
The timberline sparrow is a taxonomically controversial American sparrow. Usually treated as a subspecies of Brewer's sparrow, it is considered a distinct species Spizella taverneri by some authorities. While the timberline sparrow recognizably differs in some details, there is little reproductive isolation between the taxa.
Fri 22nd
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