Anas boscas. April 14, 1909. This evening I heard the Mallard duck making a loud, harsh, quacking call resembling somewhat that of the female Green-winged Teals, but having a different quality of tone. April May 15, 1909. My Drake Mallard died over a week ago. May 20, 1909. I saw domestic Mallard drakes in Golden Gate Parks. They were entering the eclipse plumage. Some had the green head broken up with light-colored feathers, and one I noted had no green on the head whatever, but still retained the reddish breast. December 10, 1911. Saw a good many wild Mallards as well as a number of the domestic variety in a lake in Golden Gate Park. I noted a young one of the latter just beginning to assume the green head and black tail-coverts. Two weeks ago he showed neither.