O. jocosus 9 mi. NNW Huajapan de Leon, Oaxaca May 7 Pair foraging in siring tree. When they move together, one bird gives a fast che-che-che-che as they alight, at the same time fanning tail a bit and spreading wings. Both birds seem to give soft che-cho-cho-it - a soft nasal note. Note of the one bird (?) is louder and higher (sounding similar to call call of sparrow hawk). Near long song chue-chue - chee - chue - chue - just like a soft call of lunnica pellies. When one bird gone this another at some distance answered. Foraging from bottom of trunk up to top of tree (10-15ft) hopping up vertical trunk, hanging upside down - very similar to hemilis; Sept. to-wa-et, ta wa et - other same bird gone L I I coetus warn call a-chung - a ching - a-chung = call Nos 1 - two birds alternately together and separate - each singing from different tree; then flying together - when together they seemed antagonistic. Finally both were shot together in same tree. Both apparently ot, In all we saw 16 nests in 1/4 sq. block, - but there were no nests in similar vegetation on other side of road. = A group or two groups, more probably.