D. P. PEARSON 1952 49 March 27 H. waylaver. Temp 23°; partly. West terrason tracking in snow and found another nest. Murmexone mono & virecola. tracks. Watched same nest. Some hail rim 3-4, p.m. on about 6:30 March 28 about 3/4" snow. clear. Temp 25°. Watched seen terrason's nest and baby sat. Photos of vicarosa & virecola. Scattered clouds, but no precipitation. Some rain during night March 29 Up at 5 a.m. to watch terrason nest #2. Morning cloudy, some light snow about 8. Photos of nest #1 at 11 a.m. Still cloudy at 2. Temp. at 1:30 was 42°!, at 3:00-45°; cloudy. Heavy snow at 5 till 6:30. 3/4" fell. Sky clear at 8:00 p.m. Set 3 steel traps near nest #2. The caprock leave at H waylaver also shows much glaciated polish and striations running N/E - S.W. March 30 Morning clear, temp 6 a.m 25°, 3/4" snow. Tracked terrason, took photos, then watched nest #2. March 31 morning clear & sunny. Ran traps with Merry (Parmerupa), then watched nest #2 with Mary Cole. After lunch to Timepalea where they had another Methofriveta nest forms, coupled by bridge. april 1 Watched nest #4. Morning clear, frosty; temp below - 26°. Afternoon clear also. While watching nest from about 1 to 3 p.m. heard mosquitoes - chorus of swarms of gnats. Don't remember having heard those before on altiplano. Evening clear with wind from east, but not cold, 46° at 7 p.m. april 2 nest destroyed overnight so left Timepalea without regret to meet indoor woman with 2 more nests up the grade