1911] The Ottawa Naturalist. 29 



and flocks of six and seven were seen. In the first week of March i 

 they began to congregate on the ice on " Knockem Pond" and 

 Asribridges Bay. Sometimes the flock numbered five or six 

 hundred. They always left the ice at dusk and flew far out in 

 the lake. Evidently they spent little time in feeding as they 

 remained almost motionless on the ice for hours at a time. On 

 March 24th, the ice was broken up and the flock was disbanded 

 until March 28th, when they gathered again on the sandbar in 

 the lake. Until July 7th, when the last record was made, there 

 was a daily concourse on the bar, their numbers sometimes 

 augmented by flocks of Ring-bills, Bonapartes and Caspian 

 Terns. The number of birds in the flock varied from fifty to 

 three hundred. During the latter part of June and the first 

 week in July young birds predominated. The hard sand was 

 white with their droppings and feathers. Several castings of 

 fish bones were found. 



Ring-billed Gull. May 19th, twelve seen on the sandbar 

 in company with the Herring Gulls. Small flocks arrived daily 

 until May 26th, when 165 were counted. The greater part of 

 the flock had left by June 1st, but a few were seen daily until 

 July 7th. As a rule they mixed indiscriminately with the 

 Herring Gulls, but on several occasions thev were seen in separate 

 flocks ten or fifteen yards from the larger gulls. 



Bonaparte's Gull. May 6th, six seen with the Herring 

 Gulls. On May 21st eight were seen, and by May 31st there 

 were twenty in the flock. On July 1st adults and young began 

 to return in daily increasing numbers. On July 7th three 

 hundred were counted. 



Caspian Tern. May 1st, four on the sandbar with the 

 Herring Gulls; May 3rd, forty-five on the sandbar. They were 

 very noisy, their voices harsh and rasping. They had been 

 watched by many admiring eyes for some twenty minuses, when 

 suddenly they rose from the sand, and as thev circled over the 

 water the sunlight glittered on their snowy plumage, throwing 

 into relief their black caps and scarlet bills. In a few minutes 

 they formed into a long straggling flock and flew in a northerly 

 direction about forty yards above the beach. Three or four were 

 seen dailv until June 8th. 



Common Tern. From May 13th until June 7th thev were 

 quite numerous, flying over the beach in flocks of seven to 

 twenty. 



Black Tern. May 15th, a flock of six seen flying over 

 'The Deep Hole." On June 26th a pair were seen circling over 

 the bog. 



American Merganser. March 29th. two in the lake. 



