Humilis - chiacensis 68 Rio Tiltipen April 9 the ore by exposing ground and generally making a more open situation but the ion guesses. April 10 Took several photographs of hedgerow 1.3 mi. NW Tonalá / Roll #13/ one of a chiacensis nest, another of the road or hedgerow near the nest. Just after this I took a photo of a small fox which Bonifacio shot. Later in day I took 2 photos in the study area of the chiacensis nest showing a humilis nest in the background - and a shot of the humilis nest in a full Bull-horn acacia. There are Nos. 9-10 on the roll. We hunted about 1 hour along a hedgerow 1.3 mi. NW Tonalá'. The row was formed of small trees and vines with a few medium sized granocates, I saw 6 chiacensis in approx one mile of it. Bonifacio hunted on the mountain side of the road and saw 6 chiacensis, two of which he collected. The hedge- row was about 12 feet - 15 feet wide along a ditch which was dry. Neighboring fields were dry grass with a few small trees widely spaced. Chiapain centered about the ranch houses but I saw them in the hedgerows far from ranches - ie. the nest was not near a ranch. Apparently the vegetation is so restricted in width that the birds require considerable lengths of hedgerow for foraging.