Field notes, v570
Page 461
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Logswell 1949 Aguila chrysaetos 3 Dec. 11 - 4 mi. SE Mustang, Merced Co., Calif. (cont'd) ponds & fields along E. border of the Mustang land & cattle Co. lands (Club 14) here. It finally put down its feet, showing very long feathers hanging from its legs (below the "heel"?) and alighted on the ground across a large pond from us. When we got out of the car it took off again, showing light color (white?? or golden?) about the head and much whitish irregularly distributed over the whole underwing surface, especially noticeable on the underwing coverts. This last character is so "Bald Eagle" like that I thought it likely was that species. However, Dr. Miller, called attention to the long leg feathers, expressing the idea that the Bald Eagle would not show such long ones. The light color at the head was not seen under light conditions good enough to determine it for sure. There was no obvious white at the base of the tail nor in the base of the primaries, such as a young Golden would show. [Specimens checked in MVZ — Golew have much more length on leg coverts, but Bald still shows some feathers below the heel. Underwing coverts not properly visible in most dried skins, but some Goldens apparently are much paler than others there. Immature Balgs tend to be paler & more smottled above than this bird was].