15 April 30. Took beginner's class to Golden Gate Park. Partly cloudy but no wind. Water very calm - like glass. A number of Foster Terns were flying northward across the bay. We spent an hour or more before lunch near North Lake. A Ruddy Duck in full plumage was court- ing two females which paid no attention to him until he swam away when they turned and followed him - He erected the white feathers on his cheeks till they looked twice as large and brilliant as usual, rattled his bright blue bill and bobbed his head. A mother mallard with ten baby chicks drove him away when he came too near her brood. A pair of Hutton Vireos were feeding her young birds perched in an acacia tree - During lunch a Russet-backed Thrush sang repeatedly in the tree immediately in front of us - A Lazuli Bunting was singing and dozens of song sparrows. Many Humming birds - Spotted Sandpiper on N. Lake. May 2. At Boulder Creek the Russet-backed Thrush, Lazu- li Bunting, Wood Pewee and Ash-throated Flycatcher had come in since my last record. W. Tanagers and Robins were heard - the last in flocks - The Black-headed Grosbeak was the first bird to begin singing in the morning. It began several minutes earlier than the Olive-sided Flycatcher and sang continuously till daylight, beginning before dawn. Purple Finch, W. Flycatcher and Lutescent Warblers were the the birds which followed the Olive-sided Flycatcher.