Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Specimens, Texas A&M College Collection
Parus bicolor (18)
♂ Feb 9, 1938 6 mi. SW college station WB Davis 2739
"beginning to sing"
general wear of olive brown of September specimens
dorsum shows by February - definitely toward
olive gray by then.
P. atricristatus Texas (17)
1 Chisox Mts. specimen appears grayer dorsally than
Kerr Co. specimens
At least some June & early July juveniles have brownish
bill (not black)
only 2 winters
large Kerr Co. series; 1, San Saba; 1 La Salle Co.
Coahuila (3) Sierra del Carmen (5800 ft.) April 3.
(across Rio Grande from Big Bend Nat'l Park)
Nuevo Leon (3) Rio Ramon, 20 km NW Montemorelos, 1000 ft.
June 5-12