Selander, 1954 El Mogote, Guerrero June 1 Seems to be no obvious reason for its rarity since observations of it in Oaxaca & Puebla suggested that it has a rather wide ecological tolerance. Possible reason for rarity may be absence of very large tree for nest. In the afternoon we drove down the road three kmudas, stopping there where we collected several mayflies dead on the swimming pool water. Just beyond krmudas [in Morales] I hunted along a stream where bananas, lemons & rice were in cultivation - noted black phoebe (feeding 2 large young), social flycatcher, ani, Sporophila torquata, Volatinia, Jeterus (punctulatus?), motmot (mexicanus?), turkey culture, T. fluvrosetes (heard), and red-eyed vireo - also red-eyed vireo. No cactus wrens. Between Krmudas & Cazo yalla we stopped and I hunted in a patch of tuna cactus x a ocalillo-type brushy tree. Noted several [illegible] currucos and saw also Turdus rufo-palliates. This seemed good brunnicapiselles habitat. Beyond this point the region is farmed so extensively that we decided to return to El Mogote for the night. We camped about one mile west y where we placed camps yesterday. Collected one Hemophilia henealsi and heard T. fluvrosetes singing near camp. No cactus wrens heard.