Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1912.
Sept. 15. Saw flocks of Black-
throated Gray Warblers feeding
in oak trees near house. Often
mixed or accompanied by
flocks of vireos, warbling. They
remained several days. Many
showed no black on throat.