Faleo mesteicolas 7 July Colville R the rivers at top of a talus slope. Pnuiide itself ca 60 feet leigh and vert ledge 30 ft down from top and facing S.W. Ca 1/4 mile from pair of Peregines located on same series of outcrops. Nest contained one jin → about 6-7 weeks old and another → dead in the nest and partly eaten by the other. Appeared to be dead about 1 week. Remains of ca 6 ptasmiqare in nest and indeterminate numbers of pas- series - loregfaaws mostly, Young bird was taken. While I was at the peregrine area later on, the ♀ gyp, which did not leave the cliff as they usually do when disturbed but stayed within 1/4 mile, and the ♀ peregrine met in the air over the rivers to do battle. Apparently in disturbing the pereguries I caused them to fly too close in to the gyp's nest. I could hear her clicking very coarsely and deeply as she came in from the far reef of her area. The ♀ Peregrine tried to climb but the gyp came straight in to her and overshielded the peregurine with the greatest of care. The peregurine of course easily avoided