Banka 1957 Journal 28 March U.C. Campus, Berkeley, Alameda Co., Calif. Checked nests, found no change. 7-730 A.M. 29 March Checked White Crown nests - no change. Looked at some song sparrows. Found Robin feathers. Found White Crown egg shell, 0630-0845. White Crown nest C had 4 eggs today. 30-31 March Mary Taylor checked nests A + B for me today in the morning at 0700; Found 1 young hatched at Nest B. Jay Schnell checked in the afternoon and morning (36+4) of the 31st. Nothing new. In the afternon I checked, and weighed the bird at 28.800±. An egg has gone. 1 April No more change, except C has another egg. 3 April Have total of 8 nests by now, but only one good one. 3 with young birds, 2 deserted, 1 with eggs, 1 just robbed, and 1 should have eggs. 6 Zonotrichia, 2 Melospiza. Nest B is only one with known age young now. 4 April Since P.M. on 1 April have been using balance designed with much help from Don Isaacs & Dick Boglee in the Zoo West Storage room. It is a Braun-Knecht-Heinmann hand balance (this one belongs to Ralph Bantt, mine will replace it soon), mounted by a piece of plexiglass to an electric phy. (?) which can hook on to a phy solbaced on to plate screwed into an old microscope box.