49. May 24, 1908. Viinity of Alameda, bal. Conditions:- Warm; clear; before 7:30 A.M.; no wind. Between the Alameda and the Bay Farm Island shore I saw several Sterna forsteri, two large terns (Sterna regia maxima ?), several Larus philadelphia, and one Aechmophorus occidentalis, the last being in the water. On the Bay Farm Island shore I saw an Tringoides macularius; it kept bobbing up and down. Two or three Ardea herodias and Nycticorax nycti- corax were seen. May 27, 1908. San Leandro Bay and Slough, Alameda Co., Cal. Conditions:- Warm; clear; northerly wind; 7:00 A.M. to 12:00 M. I went up San Leandro Slough to fresh water. In the upper part of the slough there were no water birds. The tracks of an Ardea herodias were seen, however. The upper part of the slough has steep banks and is to bordered with grain fields. I took a Zenaidura caro- liniensis which was on the banks. Cigalaus phoen- icens (?) were fairly common. On one of the beams under a bridge over the fresh water I found a nest of Hirundo erythrogaster containing three fresh eggs. The parent was flushed. The nest was built of mud and straw, lined with feathers and grass and placed in the usual position and of the usual shape. Melospiza cinerea was noted in the salt marsh.