OP ARTS AND SCIENCES II3 



ADDITIONAL NOTES 



FOR THE SEASON 

 OF 1911 



Note. — The numbers assigned the species in these ad- 

 ditional notes are the same which the respective species bear 

 in the general Annotated List. Two species have also been 

 added with appropriate numbers. 



9. Mergus americanus. Merganser. 



Mr. John Rogers and his son, living at the Meadows, 

 informed me on June 26 that a family of ducks was on Israel's 

 River in a certain secluded portion of its course. On the follow- 

 ing day a mother Merganser with her brood of eleven young 

 was seen. As I came to the bank of the river after crossing an 

 extensive meadow the family was sitting on the water just below 

 and did not notice me for two or three minutes, but continued 

 their quiet movements, busied in snapping after insects. The 

 young may have been three or four weeks old. Suddenly taking 

 alarm they scurried up stream, being on the up-stream side of 

 me. As in the case of the Peabody River family observed in 

 June, 1908, wings and feet were used to hasten their escape, the 

 young showing more agility than the mother in this double- 

 propelling movement through the water, as she was somewhat 

 in the rear of her brood. I was informed that several successive 

 times during the summer the family or some members of it were 

 seen on the river in the vicinity of the point where they were 

 first observed. This is the first occurrence of the breeding of 



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