Season 1981 5 Estacion Santo Moreno, Rio Negro, Argentina April 12 Poplars beginning to yellow. Saw profiles over Bariloche packing rose hips. Spent 50 mm/sec specks and ants spent 50 between the closest Verdes in front of the road, 4 p.m. Rather dense tall grass mostly in clumps, green, some clumps surrounding a bushy area like cornfields. Also some traps in the Scirpus and at the grass/scirpus interface. Also 3 two traps and 1 jump trap at a mouse hole. Then walked off to the cave but found no pellets. Ran traps at 6:30 and had 7 also longer. Camped about 2 km east of the lake, between the road and the R.R. ants spent 6 mm/sec specks around a big Barberris at camp (with cows) heard horn owl at dusk. at the big cliff. April 13 During the night (calm, started out partly cloudy, ended into overcast) heard at least 4 different two-trees but heard more during daytime. All called traps burst with new burst every 1 second, series of between 15 and 35 bursts. Traps as follows: 1 also longer at the Barberris of camp, 1 two, 14 long of all sizes, 4 new also longer (=12 total), and 4 Oakescamps. Traps in the Scirpus were mostly springy with many of them rolled off their cots; Rattler? There was little difference in vegetation between our campsite and the strip between the fence and the railroad track. North of the RR fences and the small stream all the bushes have been removed leaving well-grazed grass. Some lush green grass along the stream.