OF ARTS AND SCIENCES . 19 



17. Marila af finis. I^esser Scaup Duck. 



A rare migrant. One record. A young male was seen on 

 September 30, 1909, on Cherry Pond, showing some white area 

 about the base of the bill, but having a dark breast and head. 

 Inasmuch as it impressed both my assistant and myself as a small 

 duck, it was probably affinis and not marila. 



18. Clangula clangula americana. Goi^den-eye. 



An uncommon summer resident, breeding on Weed's Pond. 

 A mother and six ducklings, estimated to be two or three weeks 

 old, were seen on this pond June 23, 1905. Five weeks later, 

 July 27, three well grown immature birds were seen. On June 

 21, 1906, five immature birds were observed on the same pond. 

 On June 29, 190S, two females, a duckling somewhat well grown 

 and apart by itself, and a brood of five young in downy plumage 

 were seen on this pond. The single larger duckling swam 

 rapidly away from the shore, which we had approached as we 

 emerged from the woods, soon dived and was not seen again. 

 The two females, who kept by themselves, rose on wing together 

 a few rods at our right, as soon as they perceived that they were 

 discovered, flew around over the pond several times, and, with- 

 out leaving it, at length dropped in again at the lower end, 

 remaining in sight there during our stay, which was forty min- 

 utes. The brood of young remained close by the opposite shore, 

 swimming among the yellow lil}^ pads, and did not appear in 

 the open water at all. The adult birds at no time were with the 

 young. On July 9, 1909, a small duckling, probably not over 

 three weeks old, was seen on this same pond. Peeping, it swam 

 out from near shore, at length dived when about a hundred feet 

 away, and was lost to view until it came up near the opposite 

 shore, where it remained, swimming, diving, and running for- 

 ward on the water, apparently after insects. Presentl}^ a second 

 duckling of similar size came into sight. No adult bird was 

 seen on this occasion. On no other pond have young been 

 observed. 



