Falco Anatum 415 MASS. (Middlesex Co.) 1877. (Sep. 13) Downward, associated with the Swifts were two Kermode hoom the last of the season 8 Sept. 23 While sitting of Mr Nesbitts piazza in Cambridge this morning a fine Falco Anatum appeared and Skinned Swift just within thirty yards of us. Passing one an open field when some white hens wer fuding it stoof four successins times at them different birds falling from a height of about thirty feet on an irregular spiral. Each time it protruded its talons as it round its victim but each time it missed it, aim and with a superb wheel rose again to its former elevation. It seemed to me to be simply playing - swooping down from then Avantoness, as I could see nothing to prevent its seizing its game had it so wished! The hens in turn can seemd badly frightened and fluttered of sufficent haste. During the whole times that it was in sight I did not see it flap once all its motions though rapid been simply easy gliding terms. It was a small bird, I should think a male and looked very dark brown in color,