1941 Apr. 7. Berkeley. The oaks are full of birds. It sounds like an aviary with everything singing: Purple Finches, Siskins, juncoes Audubon Warblers in flocks, Lutescent and Pulicataed Warbler, W.Flycatcher, Spotted Towhee, Song Sparrow and House Wren settled for nesting. No sign of female House Wren yet. Many robins picking up worms. The Allen Hummers went to Codornices Park for the morning. Forms one aggregation of migrants in the oaks- Aud. Warblers, Siskins, juncoes. A Hermit Thrush and a Fox Sparrow. April 8: The Faculty Section went to Tilden Park, Warbling Vireo, W. Flycatcher, Lutes- cent Warbler, House Wren s.v. Hermit Thrush, w.v., Siskins in flocks. A California woodpecker was seen and three Great Horned Owls- The first one seen was perched on a flat stone among the eucalyptus trees below the Wild Cat Canyon road. Another followed this as he flew and then a third. We found one pellet- fur with a jaw bone inside. Blasting disturbed them. At home - call notes indicated a female House Wren, at least. A Black-headed Grosbeak was singing across the Canyon. At noon crowds of birds as before- Cloudy- chilly. When the milkman stopped to deliver milk next door Two Western Flycatchers flew into his truck. The inside of the beak is bright yellow.