altiplano: Then down the long zig-zag to Alvaray, arriving there about 5 p.m. Pretty good forest in place on this grade at 11,000ft. and lower with pretty good stalls of fruit in Alvaray at 8300ft. Then down the hill further in the dark to camp at 6250 ft in their scrub of pepper trees, century plants, agaves in big clumps, a small tree with white morning-glory flowers. Some delonix on trunklets, but definitely dry. Put out about 30 traps for moonlight. May 10 Temp at 6:00 a.m. 60°. There were many frogs - 2 kinds of crying I think. Left early to climb up to the Altiplano, but the climb was very gradually up to the canyon and the Rio Pachachaca, mostly then pepper trees, agaves, organ-pipe cactus, etc. Count 2 frogs cave. Saw Crotophaga at 6500' in their scrub-cactus, and Carl shot one at 7100ft. Sugar cane as high as 8500 ft. Carl shot a torrent duck at 7100ft and I one at 11,400 ft. Lunch at 8000ft. with only a few goats (many at 6250 miles we spent the night). At 10,700 ft. in the gorge was many bushes, pepper trees, scotch broom, Spanish cross. At 11,300 ft. no more pepper trees but numerous other bushes & small trees, also a few green thorn bushes like those at Puerto. Camped at 4:30 at 11,700 ft. where bushes are thinning out, a few Polygala-looking tree, some cactus, but definitely a trick of altiplano due to presence of tota (quadrangularia and ?Boecaria?) and flubera. Put out about 35 traps before dark. An intelligent (and quiet) boy encountered carpenter slatyman in Alvaray had been out hunting small parrots in a