A. Wilson, 1811,
near Kamiah, Idaho, USA.
In the past has been regarded as most closely related to P. olivacea, in part due to limited hybridization with latter, but cladistic analysis based on mitochondrial DNA indicates that the two are not each other’s closest relative. Instead, appears to be most closely related to P. bidentata and the “P. flava group”, the three forming a clade; further, vocalizations and several plumage characteristics support close relationship with P. bidentata, and the two hybridize. Birds from Texas, described as race zephyrica, considered to fall within the range of variation of the population as a whole. Monotypic.
S Alaska, and W Canada (from British Columbia and S Mackenzie, N Alberta and S Saskatchewan) S in W USA (E to Wyoming and C Colorado) to SW California, S Arizona, New Mexico and SW Texas, and extreme NW Mexico (N Baja California). Migrates to S California (rare) and mountains of W Mexico (from S Baja California, S Sonora and S Tamaulipas) S locally to Costa Rica and, rarely, W Panama.
Food and feeding
Status and conservation
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