Arenaria interpres. Sex aviary birds. January 14, 1912. Scapulars apparently fresh. Wing coverts and primaries worn. Interscapulars apparently worn. Tail and coverts appear fresh as does white plumage of under parts. Branta canadensis. February 12, 1912. I'm examining five or six birds of this species which were resting on the grass on the edge of Stow Lake in Golden Gate Park today, I noted one with yellowish white filoplumes growing from among, or perhaps attached to, the feathers of the lower back. These feathers are black and are hidden when the wings are held in their usual position. This bird seemed to be in quite fresh plumage as did [illegible] the others, although the lower backs of only two others were exposed for scrutiny. I looked at two Branta albifrons but could find no such feathers on their lower backs. Arenaria interpres. May 5, 1917. Seems to be getting new reddish wing coverts,