1939. April 9. Berkeley. Very silent in early morning - At 7:30 I heard the call note of a House- Wren and a moment later he began To sing near the lower loft. First time I have heard one in Berkeley though there has been every opportunity. April 11. The House Wren brought a mate to the nesting box near our front door, Excitedly and clicking his bill all the time. Then they went below the house, and I could hear their singing for some time. Then they disappeared. Clear. Cool breeze. Less clear in afternoon April 12. Clear - N.W. breeze - cool. The Black- headed Grosbeak could be heard singing near the house. Still very few birds near the house. No flickers. Fox Sparrow still here. Trees have new leaves. A robin is picking up insects in the street. The Lady Birds went to Codornices Park. Saw Anna, Allen, and Rufous Hummers. I heard one Kinglet, saw one Androdon Warbler catching insects. Gambel and Golden-crowned Sparrows were still abundant. (Of Summer Birds besides the Allen Hummer were the Western Flycatcher, Warbling Vireo (3 fps.), Lutescent Warbler and Palestine Warbler. Later we went to Mrs. Leaven's garden on Yorba Rd.