journal 17 1984 18 June Layden Creek field station, Sierra Co. California 632856 in diameter. I had come upon what I believe is the male about 1 hr ago. He was chipping on a fallen log across the stream. I noticed he had an insect in his beak so I decided to seek the cam of a small pine and observe him. Shortly thereafter I noticed another SS come out of a willow thicket about 57m long and 3m wide. Both of these sparrows were flycatching over the creek. At about 1: observed the 02(?) rub the wings off of what could have been a dragon fly by rubbing his bill against a dead log. The nest was found by watching adults carry food to this willow clump. They were pretty sweaty. But it just came down to the fact that when they rest they would fly out of the willow and the flycatcher they would however spend a great deal of time chipping while they held food in their mouth. They would chip back and forth. Wilson's Warbler would fly into the willow and seemingly not be deterred by the sparrows. The nest was situated at a low fork (~1') of a willow that was 6' tall. The branches of the fork were 2