P. PEARSON 1952 Rothafreeta (cont.) about 40 yds from nest, a bird from south slope (?) who had been calling, then come over to south slope. Stopped calling as he approached, and went then later where I had last seen the other bird. He started giving the low quiet chip, but no response. Then he worked on 10 or 15 yds and stopped, building the quiet chip up into a loud chip, and screening some. After about 3 minutes a bird came from later that looked gone three and stuffed about 10 ft. down from him. He continued calling + screening, possibly didn't see the other bird, who clearly moved down to right. Then another bird came suddenly from some later to attack. Calling bird just displayed, - ed, tried to, then turned and chased other. Both birds screamed or throng flying but didn't take off... after 15 or 20 yds chase they forgot each other and grazed downhill about 10 yds apart, the ? probably not seeing its other but the other probably seeing this ?, snatched & froze up beyond the fargreen scree (15 yds from nest) then up south hill where he had come. Good tree - too Calling then attracted me back to lower east slope where I picked up another bird that fed for half hour in and around for green scree, then disappeared into 25 yds beyond nest about 10:20. At 10:40 new calling on lower east slope, starting as low chip and building up ended by flying. Left for home 11:30. Egg taken from nest # 2 last nuts at 5:15 measured 51 x 36 and weighs 44 gms.* Found slight vascular pattern but no sealerage. March 20 At 7:45 the midday arrived + told of another nest on the cliffs near hialouse. Visited it at 8:00 and the parent was incubating. Went back at 1:00 and no parent. 9 eggs, 8 in circle and 1 in center or top of others. All well-covered with feathers. Built a bird nearly + turned grass for visibility until 2:10.