K. Selander, 1952 4 Campylorhynchus brunneicapillus August 23 Piede la Cuesta, 20 ft., Guerrero, Mexico. - Heard a new noise from wrens today - given while foraging - a very soft "wee-poo-wee-peek-wuh-pee-ee-cha" - Sound not unlike that of a creaking door. Wrens were still as forceps - often bending down to probe side of branch. Saw one bird get a larva (insect) about 1/2 inch long. Held it in bill for a moment then swallowed it. Very quiet for long periods of time while foraging. - The remaining members of the flock which I encountered near the west remained in the same tree after I shot the two juveniles, but became silent. After 5 minutes they began giving froggy notes and moving about. Foraging note given by lone bird - no others in sight. August 24 Shot more today, 3 of them adults. Adults more wary - the immatures, hence, more difficult to obtain. Found birds in family groups, with one exception - took pair of adults alone in mangrove tree near water's edge. Call of young are higher in pitch than those of adults - also less vocal - more often a simple noise "cha-cha-cha". Wrens (especially juveniles) will approach within 2 feet or less if I stand perfectly still beneath the tree. Noted two nests in small broad-leaved trees (10 feet high) located in separate trees 10 feet apart at height of about 7 feet. Probably wren nests - but not certain. Both had openings horizontally - nest small = 6 x 4 inches.