Petelca 1946 Oct. 18 El Batel, 70 km. NE Magatlan, 5,100 feet, Sinaloa Hunted along the ridge above camp, continuing along a cow trail to the other side of the main ridge and out onto a prominent point from which one could look down to the Rio Bahuarte. Birds were quite active, in part probably because clearing weather after 3 successive after- oons of rain. Several very large flocks of small passerines were met, these consisting of a large variety of warblers, titmice and creepers. Oct. 19 Hunted in the vicinity of the pass, and to the north. Oct. 20 Spent most of the morning taking photographs and collecting plant specimens. Days prepared in the afternoon were brought in by Alberto Labrador. Oct. 21 Returned to the high ridge above camp to attempt to locate Cyanocorax, but without success. Most of the morning was spent there investigating the main draws as they begin to drop off the ridge. Bird life was not very much in evidence, the most frequently by far. species being the acorn-stoning woodpecker, Empidonax flycatchers (probably all migrants), painted small redstart, and a small wren. The local wrens have puzzled me repeatedly, as the notes heard suggested that there might be two species - a house wren, almost certainly migrant, and the more brown kind with a rolling call very much like that of