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San Jose, Santa Clara Co., CA
23 Feb 2000
All photos by Mike Rogers,
Fig 1) This bird has been coming to a suburban lake in San Jose, CA for 3 years now. Photos of this bird as a two-year old may be seen here. Now a four year old bird, it is largely assumed to be Lesser Black-backed graellsii. However, there are some strange things. Most notably, the moult timing. It didn't complete growing in P10 until February. Secondly, it seems a bit dark for graellsii. Note also the extensive black in the bill.
|Fig 2) Note the small black dot just inside the white on p4 (right wing). The mirror on p10 is pretty small and a strange shape, possibly because of immaturity?|
|Fig 3) Note that there is still black in a central rectrix.|