SP Myers 1973 3 Trans chaco highway, Asuncion - Km 275, Paraguay July 25 (parakeet (esp monk parakeet), giant wood rail, lap-wing, 3 sp. love, hornero, roadside hawk, black-necked hawk, sparow hawk, et. I will make a more detailed list on the return trip next week. 275 km NW via Hayes by road, Dept. Pres. Hayes, Paraguay July 25 We arrived at the estancia Rincan Charrua in mid-afternoon. It is located several km north of the trans chaco highway, with the ranch house located several hundred yards east of a small river. Forest is low, dry scrub, typical for this part of Chaco. About 4 pm Phil, Alvaringo (caretaker) and I went hunting for ducks. Walked SW to river, where we immediately saw 50 or so teal, ~10 muscovy ducks, many southern screamers, limpkins, plumbeous and buff breasted ibis, etc. Also found a maguari stork nest (occupied, ~10' up in air on isolated tree on W side of river, tree isolated from forest by swamp.) Shot no ducks (not for lack of opportunity). A more thorough list of birds here will be produced during the next few days. The weather began to clear in the evening, with clouds moving off to the north. Temperature during the night went down to below 4°C. July 26 Drove before dawn and walked to the river approximately 1/2 km to SW from ranch house. It was cold - 4°C, but clear except for a line of clouds extending ~10° above horizon along its entire length. I went to sit and watch the southern screamers which were in a flock big on the swamp near the site where several forces come together and cross. There were 112 screamers in that flock. Also a pair jabiru stork nearby, and several maguari storks. I stayed in that mainly through the morning to take photographs. At least 10 jacanas along a 30 yard stretch of the river's swamp.