May 12. Cool. May 13. Showers, light at dawn Commencement in Stadium. Showers p.m. May 14. Cool. Cloudy a.m. Clear p.m. Crisp. May 15, 16. Annual meeting of Cooper Club. Warm. May 17. Warm. Breakfast for Board of Governors. Olive-sided Flycatcher called Thousands of red from butterflies flying N. May 18. Hot north wind. Drive to Boulder Creek. Slept on porch. Could hear wind roaring in trees on summit but very little reached the floor of the valley. 91° m S.F. May 19. Very hot day. Thrush and Grosbeak began singing at 4:20. Purple finches conspicuous. Have missed their song for several weeks until today. At 8 a.m. I visited the nest of the Cassin Vires; one baby still in nest ; one 6 ft. to South, one 15 ft N. Feedings very infrequent but abundant. The male was feeding no 1 (N) when I arrived. No 2 (S.) was not fed until 8:25 but was fed six times between then and 8:45 and moved a little further after each feeding. No.3 in the nest was not fed until 9:15 and then several times. The male seems to confine his attention to no. 1. The female to 2 and 3, using occasionally a tearing note 'chee, chee, chee, chee, chee.' The bird in the nest used a single chee usually; the others, chee, cheé orchee, chée, chee. Tanagers were singing all day. Hotter at Santa Cruz at dinner time than in nuts. May 20. Baby Cassin Vires in the nest all day ; others in near neigh borhood of nest. Wonderful chorus at dawn with thrush and grosbeak the first to begin. Kingfishers conspicuous though not heard on previous visits. Chipping Sparrow heard first time. Linnut flock which has been on the upper side of the Winkleblack place have dispersed. Hot. No wind.