C. humilis 96 Rio Juanol, 14 mi. E Nultepec, Oaxaca May 3 I believe that humilis occurs more often strictly in pairs than does nigricaudatus - but then it is late in the year now & possibly groups have broken up and pairs are establishing themselves - this might account for unfinished nests. May 4 Wren singing outside hotel in Tehuantepec - ?la - weet. 6.5 and 5 mi. E Tequisitlan, ±1000 ft., Oaxaca - These wrens are probably as common in the cactus - deciduous tree forest as in the lowlands of Tehuantepac. A large aceroscous cactus, 15-25 feet, and a thin-padded tuna type are very common. The latter grows to about 7-8 feet high. There are a variety of deciduous trees, most of which have no flowers or leaves. The thin agave - like plant is common beneath the larger cactus trees. The small evergreen shrub which occurred at the Rio Juanol is a small tree here. May 5 May 5-1 is common large deciduous tree - tallest plants in the area. - no leaves. trees May 5-2 is a small tree May 5-3,4 are common trees (small) - The smaller leaved one is bigger tree in the forest, the other was along the road & held a nest about 9 feet up composed of small trunks & plant fiber & fruit of May 5-1 tree. Nest May 5-5 is a common broad-leaf tree. There is also an sphaere-like plant here - about 2-3 feet. Ground is well cleared - many cattle grazing here.