LLW104 1964 Journal July 26 Guernavaca, Morelos, Mexico Up at 0500. Had breakfast + drove out to Canon de Lobos. Did, went down into bottom of canyon + worked north to mouth of side canyon extending up to west. I went up east-facing slope into area where watched Aimophila humeralis. Spent until 1100 up there with half hour out to go back to car to show our collecting permits to some game wardens ( so they said). In return they gave me Phalotyx fasciatus shot just down the road. Saw flock of White-naped Swifts, just above west crest. Swirling in flock of 100+ while then broke up into smaller flocks feeding just above tree tops. At least 4 Stilogorus cineraceus (2087 + 248) perched in tree on hillside. A pair of Varied Bunting appeared - not for 1st time today - on east facing hillside. Several Rusty Sparrows calling from near lower limit of oaks on both E+W-facing slope. 2 Trogons (Piob.T.elegans) calling from trees over crest. Back to apartment where spent afternoon sketching birds. Wrote notes, had supper, + to bed. Clear in early morning - cloudy to east along mountains - clouding up by mid-afternoon. July 27 Guernavaca, Morelos, Mexico Up at 0500. Had breakfast + drove out to Canon de Lobos. Did. went up into side canyon to west again while I went back up to east-facing hillside to watch Aimophila humeralis. Day was completely overcast except for 1-2 hours from 10-12. Rained from 0845 to 0930. Saw flock of 50+ Grey-tailed Tropeks, wheeling over west ridge at 0800. Moved off to W.