R.K.Selander, 1952 Pipilo erythrophthalmus August 13 15 mi N Cuernavaca, 8900 ft., Morelos, Mexico. - One of common species in the vicinity of camp. Occur in pairs in heavy thicket of [illegible] shrubs beneath oak trees and pines. Easily excited by any sort of squeak. Notes: a shrill "shree"; rising. Heard singing - "chip-chip-chip-tareee". Atlapetes pileatus and Atlapetes viridiceps seem to occur in same niche. Watched an adult A. viridiceps moving about on some limb of small bush with a pair of Pipilos. Obtained an immature specimen. Occasionally, towhees ascend to lower branches of the larger pine trees, but, generally remain within 10 feet of the ground in the lower shrubs and smaller oak trees. August 15 Birds usually found in pairs - male and female. Singing heard rather infrequently.