JP Myers 1979 Thinocorus tunicivorus Tower Llanos, Estancia Medeland, 35 km S. of Trancio by road, Ptdo de Madariaga, Proia de Buenos Aires, Argentina 16 March 1015 - spotted flock of 25-30 Thinocorus, flying over the llanos. They landed in the pampa Thistle area where I have found fewer previously. 1230 - found flock of 25-30 thin, preumably the same ones as seen 1015, in Thistle. 87° + 8° percent. Nothing obviously juvenile (look!) only know if it was obvious). 20 March see journal. I have seen over 50 Thinocorus today. They appear to be diversifying, i.e. occur- ring in other types of habitat (but still very scatter). 2 April numerous Thinocorus in llanos and surrounding hills. I found over 150 in the vicinity of the thistle area where they had first appeared. Their birds were separated in several flocks of 30-40/flock. In addition to these were other flocks in the short grass portion of the llanos, quite close to foraging buffalos. Also found Thinocorus on the roads + in the corn field - even one "in the mud by the Arroyo"! They're everywhere!! One of the 5-snipe in the road in the fallow cornfield took a 'dust bath' as I watched - it consisted of 2 behaviors performed in sequence: first the bird shook its bill sideways in the dirt, driving up some dirt. It then scratched with its feet at the dirt, alternately perhaps alternating one foot then the other, but in any event, more scratching rapidly + throwing up a cloud of dirt behind it. Bill digging then began again. It did not appear to me that the bird was eating, although whether the function of the behavior was actually to bathe with dust was not indisputable. Arroyo Chico, Estancia Medeland, Ptdo de Madariaga, Proia de Bs. Aires, Argentina 11 April. Another bird to the creoptic list - a 8-9 seedeater was cropping grass blades growing out of an old creopic on the beach in the Arroyo. It also dug within the another creopic, grabbing a piece + shaking it, then repeating. Whether it was taking seeds or insects I don't know. After going after the creopic for a few minutes the bird began foraging on the sand, pecking at objects too small for me to discern. Tower Llanos, Estancia Medeland, Ptdo de Madariaga, Proia de Bs. Aires, Argentina there are many 5-5's on the llanos - at least 5 or 6 flocks of 30+ birds within the area that I frequent. They appear to be roosting on many of the sites where I find them foraging during the daytime. 1845 (sun set 1925) there are at least two flocks along the edge of the