fairly regularly as she fanned, and was answered by a faper up the next ridge to the right. Finally spotted the uphill piper about 70-100 yds. above nest. For some reason this piper was not chased. The bird sat for quite a while on top of a rock watching the downhill bird and the PI. As Paige approached the bird at 4:30 the uphill faper retreated Uphill. At one time in the afternoon I thought I could locate, by hearing, 4 different pipers in the canyon. This plus the bird on the nest makes probably a minimum of 5 birds in the area. March 16 - Sat at nest from 4 PM on. Very little excitement. Bird (red) left nest at 4:35, furtively sneaking down gulley. About 4:15 there was a little piping, some from near the nest which sounded like the nest F, some from up the gulley. No more piping until 5:20, when there was a single pipe down the gulley. Another single pipe about 5:30. Bird came back at 5:45. five eggs, one on top, covered, quite warm. March 17 - At nest #1 at 8:20. No bird. A nothing seen or heard until after 9, when the nest F (sounded like her) gave a couple hoarse pipes somewhere near the nest. Bird returned within a few minutes of 9:30, although I didn't see the return. Back to nest at 3:84. Bird on nest,