LL Wolf 1963 Aimophila rufescens July 27 9 mi. SW. Aultan, Salisco (See journal) July 31 various localites ~ 10 mi. N Guadalajara, Jalisco. In open, legume-free studded, grassy hillsides in Barranca de Obletos found Rusty Sparrows to be fairly common. Spaced birds singing from elevated perches usually on dead limb, but often well below top of tree or brush. In general do not sing from top. Recorded songs of two birds. In a more densely wooded area along stream bed down the hillside from these birds was a singing bird A. quinquestrata. Only foraging seen was by hopping along ground. Aug. 2 10 mi. SE. Maida, Michoacan One flew up from ground in open oak-covered hillside, herb layer dense in patches. Lb on 2' stump then to another stump 5 feet away. Back to ground to forage along slope. Flew up to lower (6-8') branches of oak. Sat 1-2 feet from trunk where no leaves on branch. Preened in sun for 5+ minutes. Interrupted preening once to sing two continuous phrases of song. Back to ground & lost from view. #2131- stomach c grit, insects, spider, & probably veget matter animal ~ 75-80% of contents.