JP Myers 1973 5 by road Km 275 W of Via Hayes, Dept Pres. Hayes, Paraguay (by road) July 27 cont'd A little mixed feeding flock of small birds passed through. It had v-crowned flycatchers, a rufous-sided towhee [illegible] freigillid, and red crested cardinals (the dominant species of this flock). They stayed on the ground and low in the shrubs around me. The flock was broken up by the appearance of a sharp shinned hawk: the cardinals scattered first (no obvious calls were made) the hawk landed ~15' in front of me, stayed for about five minutes, and then left. I soon followed, heading back around the S side of the swamp. Second Within 100 yards I picked up another mixed flock, this composed of a different set of birds: spauld olole, v-crowned flycatcher, a small plain tyrant (almost kinglet size), and a few (perhaps two) warren-billed woodcreepers. I collected one of these clendroclyps, and also an olole. I then continued toward the north along the east side of the swamp, and encountered another mixed flock similar to one I had seen (but not described) previously; It was composed of 2 species of tyrant: one of a species like the ash-throated flycatcher S., and the other a many (perhaps as many as 18) of a smaller, dicker bird which I had seen flocking previously. I collected one of these also (Catalog # ). I forgot to mention previously that earlier in the day I had seen a curious-beaked woodpecker [illegible] drilling holes in Prosopis. I watched it for ~15 minutes, and only once did it land on a palm; that out of five trees which it visited in the time I watched, and furthermore, that the palm was used not as a feeding place but as an alarm. Chachalacas were also common; I saw at least 6 in [illegible]