Field notes, v644
Page 403
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Symplo fusca 33 Temescaltepec, 1500 ft, Mexico, Mex. July 29, 1946 Two of the specimens prepared today are juve-nals, with streaked underparts. Several of the ♂'s have very small gonads (1-4 mm.) & appear to be in fresh plumage. It is difficult to tell whether they are juveniles just molted into adult plumage, or adults with regressed gonads. 3♀'s & 1-female are definitely breeding birds. It seems that at least some of the birds here have broods a year. The fact that 2 juveniles were taken would indicate that the males in adult plu-mage are fully adult rather than newly molted juvenals, as the juvenals collected are just starting their molt. This question will probably be solved only by a detailed study of plumage in a large series. These birds are found in the old fa-miliar places - along vegetation-covered stone walls in maguey & scrub hedgerows adjacent to cornfields and pastures. No calls or song were heard. One group of 3 was seen, and in the same place as in which 1 bird was collected yesterday. Brown Tow- hree are called "fajaro bolo" by the natives here. Temescaltepec, Mexico, Mex. to Zacapu, Michoacan, Mex. July 30, 1946 On the way from Temescaltepec to the main road, Brown Towkees were seen 8 mi. E of Temescaltepec, 7600 ft. These birds undoubtedly go from Temescaltepec along the