2 LCWOLF 1964 Ainophila humeralis July 14 Cañon de Lobos, Pui. E. Guernavaca, Morelos, Mexico Mood off to W. where here + zeek, + soft trill notes. 0940 - found group of three birds foraging together in vines of subcanopy + out to tips of branches of a sumac-like shrub (10') (Seems much more woody + thunks hawin). Two flew over to trees + shrubs (in group) 20±yds. to W. foraged here mostly in subcanopy from 6 - 12' up. Then both back to sumac. One almost 6 pounds worked up one trunk in hops to canopy. Out bend of branch where picked hard at leaf. Most of foraging done by flying to perch, pering about, + moving on or else hopping from perch to perch in that vicinity. All 3 birds appeared to be in adult plumage. Almost regular chipping from foraging bird(s), but impossible to tell which one(s). 1100 - found group of 2 birds moving thru canopy zone on hillside dominated by 15-20 foot trees which form 80-100% canopy. Dense shrub layer + >50% shrub cover. Giving chip chip use-louder as one flies to next tree + followed by 2nd. One dropped down to 2± feet above ground in shrub layer + moved thru at this height until out of sight. July 15 Cañon de Lobos, Pui E Guernavaca, Morelos, Mexico. 0600 - as we arrived could hear ravenous chatter given from many parts of hill side at dry end of canyon. Seemed to be mostly limited to areas which contained trees up to 20-25' tall. In some places these formed almost closed canopy. Two groups I saw were of 2 birds each.