Field notes, v644
Page 411
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Pipilo fuscus 37. 2 mi. SE of Patsuario, 7700 ft, Michoacan, Mex. Aug. 1, 1946 often being found in the same hedgerows, or in the same tree & brush-filled barranca. In all my hunting, however, I never saw oraĆ­ out of the trees or brush, whereas fuscus was commonly observed to forage in the adjacent cultivated fields, out in the open. On 3 separate occasions, while squeaking to attract P.oraĆ­, I had fairs of Brown Towhees respond immediately to my squeaks, and flash out into the exposed outer branches of trees & shrubs, uttering a continuous series of very harsh "chaak- chaak" notes, quite unlike the clear "chink- chink" of our California Brown Towhees. This is the first time in all the P. fuscus hum- hung I have done in Mexico that I have had the birds respond to squeaks. They acted very much like birds that had young out of the nest, and were probably either late breeders, or birds with a second brood. 2 of the birds not collected in this locality are molting juveniles. Several of the adult males have a great deal of rufous on the filum, a character supposedly pertaining to potosinus, but they are darker dorsally, and the under-tail coverts a more intense cinnamon, than potosinus. These birds are continuous with the Salazar- Patsuario population.