R. K. Selander, 1954 C. brunneicollis 3 7 mi. E Quertaro, 5970 ft., Queretaro, Mexico March 14 obviously is first-year on basis of plumage, had a brown eye rather than the full red-brown eye of adults. Apparently the iris may not reach the adult condition until very late. This individual was a female showing a somewhat enlarged ovary - there was no brood patch but the sparseness of feathers on the belly may have been a sign of the development of a patch. The type of cactus were present in the area - the tuna, a fair sized cholla, and, rarely, a candelabra type (see photos). Some bushes and trees present but without leaves at this time of year. Appears to be optimum cactus cover habitat to judge from their abundance here.