Moths (cont.) from). She hurried towards calling, but the other bird saw her coming, shut up, and ducked out of her way. She searched for it but didn't find it, then returned to the nest ridge (her frequent return to this spot make it seem like the center of her "territory": Shortly thereafter the bird uphill started calling, and she, also calling, started up towards it. Further in the gloom. Red O returned to nest at 6:00 p.m., no sound. At 6:05 as dark settled both birds were calling steadily and vigorously, the uphill bird calling first, the other 1/2 second later. They were about 50 yds up the ridge from the nest. In 2 hours this female made 4 sorties against calling birds, one of them at least 60 yds from home base, and while out on one sortie met the nest O and probably copulated with him; at least 2 different birds were sorted against, sex unknown, don't. During the courting today and day before yesterday, the nest was not greatly incensed. March 15 TO nest at 10:30 a.m. to relieve aunt. Some calling etc. downhill from nest when first arrived. Red O returns at 11:15. Things for next half hour very quiet, sunny, then left. Morning had been mostly overcast, afternoon rain from 2-4, then cloudy-sprinkly. Vest looks at 4:30 p.m. to relieve aunt. Red O on nest, local & downhill, calling, another bird uphill, calling; focal & wandered up nest ridge and stayed above nest, calling + preening. Did not seem interested in going after the bird calling about 50 yds further up the ridge.