U.M.Dziedoy 1978 El Jio, 230 m., 19.5 km. NNE Encarnacion by road, Dpto. Itapua, Paraguay. 31 August While in the hotel I heard some calls being given outside and found there were Gray-breasted Martins (Progne chalybea) circling high overhead. I recorded the birds as they flew overhead and while they were roosting inside the porch roof of one of the hotel's rooms. 1 September Left the hotel at 07:35 today. The weather was cool, with an overcast sky and slight winds. I took the trails from the hotel to the garbage dump and then took Middle Trail. I turned back on Middle Trail before it crossed Barana Creek, and returned via the same route at 11:00 From 16:15 to 17:45 I went to the reservoir and airstrip to see if there were any pronounced increase in bird vocalizing towards dusk. Although a number of doves of at least two different species were calling, in general the seemed to be no pronounced increase in vocalizing over what I heard around there yes terday in the late morning and in the afternoon. 2 September Left the hotel at 05:45 today. The