2 1957 Zonadma macrona 23 March 57, 2214 Vaste St, Berkeley Alameda Ca. Calif. Here it gathered nesting material. Flying back to the bird in the tree, it walked along the branch, and across the back of the bird seated there, actually walking on the bird! Twice I saw it do this. It evidently gave the material to the bird in the tree, and this bird arranged it. 24 March Saw one bird flying into the tree with a twig about 8" long crosswise in its bill at about 7:45 A.M. It landed in tree, stood on the back of the bird sitting at the fork, and gave the latter bird the stick. Then moved to one side as the second bird arranged the stick. The bird at the nest is seated in a different position today. The first bird stayed nearly for a couple minutes, then flew to NE corner of 1st & Vaste, presumably for another twig. 25 March Still building. Parts of the nest show sticking out over limb. 8:30 A.M. One bird sitting, other flew into tree. 19 April From a few days after the last entry, I have not seen any birds around this area. As far as I can tell, the nest was never used - perhaps was never completed.