Marshall, 1941-2 Tyrannus verticalis Mt Cacaquigne Dec 25-Jan 6. Loose flocks of 6 - 25 indiv. often seen n. hacienda where clearings with tall snags - many birds in same tree. Would go out after flies. Sometimes whole flock would get away & fly south. Jan 7 Flock in few trees in arid type brush low on north slope. Not noisy at all - just occasional "hip hip." More or less organized as flock - always a few birds in snags in the clearing.