SIERRAS, 1900. SUNDAY, JUNE 3. Reached Placerville this evening. MONDAY, June 4th:- Saw Western Martins (progne) flying about the Cary House and chattering loudly. Tay- lor and I left Placerville about 1 o'clock for Fyffe. Very hot going up. The Californian Towhee appeared as high up as 2,500 ft. Reached Fyffe at 7 o'clock. TUESDAY, June 5th:- Taylor had taken on May 21 a set of Calaveras Warbler 1/5 along a small irrigating ditch. Went out early in the morning but found nothing. We went down the ditch. Found Black-headed Grosbeak's nest with three eggs which we left. The nest was 10 feet up in a deer-brush. Down the road at about 3500 ft. Audubon's Warblers were common. Also saw a Hermit there among the pines. Shot a Hutton's Vireo (female) in a black oak and thereafter heard the bird frequently, showing it to be common at Fyffe. I saw an Audubon's Warbler with food in its bill and shortly after found the nest 20 feet up on a dropping limb of a large pine. On climbing up the four young flew from the nest. We collected them all and also both parents. The male was in high breeding plumage. I skinned all six and sent them to Beck. Collected nest on limb. Leroy arrived at noon. After dinner we struck out up the road. Saw a good many birds. Came back and after supper went down the Crocker trail. As we were coming out thro' the timber Leroy found a Black-th. Gray Warbler's nest in a small cedar sapling, four feet up. It held three eggs which he left. Nest of usual grayish material and feather lining. It is evis- ent that the Audubon Warbler is most common near the turnt district at 3500 feet. WEDNESDAY, June 6th:- We were up early this orning and down the road. Went north and found a lack-headed Grosbeak's nest 10 feet up in a deer rush, holding four fresh eggs which I took. Shot a emale Louisiana Tanager and saw several juncos. Heard two Cassin's Vireos and found the nest 10 feet up in black oak on a drooping limb, but incompleted. Leroy