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.