Re: [CALBIRDS] "Black-backed" Lesser Goldfinch status
- Monterey Birds (2002) treated this as polymorphism, to wit, "at least
twice local birds have appeared to be entirely or almost entirely
black-backed: one banded at Big Sur R. mouth 28 Jun 1993, and one
observed below Junipero Serra Peak 20 May 2000 (J.N. Davis). Black-
backed races (i.e., nominate psaltria) occur as close as eastern
Arizona but there is no reason to suspect that these MTY sighting in
summer involve vagrants. Rather, it seems exceedingly likely that
black-backed individuals are a rare variant within local populations.
Phillips, Marshall & Monson (1964) conaidered black-backed males to
be simply a color morph within the U.S. populations . . the only
truly black-backed subspecies they recognized was mexicanus of Mexico
and Central America."
Pacific Grove CA