Vol i g XVI "| Mackay, Terns of Muskeget and Penikese Islands. 



2 6 3 



As will be perceived, this island continues to hold its own with 

 the most favorable showing of any of the other breeding resorts. 

 I again noted this season, as I have in previous years, consider- 

 able difference in the size of the Tern chicks found here. I 

 attach no importance to this variation, it undoubtedly being due 

 to the different dates of hatching. The Laughing Gull chicks 

 were about all of one size. 



South Point of Muskeget Island, July 4, 189S. 



Terns. 

 Nests. Eggs. 



Nests. 



1 egg each, 



- eggs " 



3 

 4 " 



Totals, 



Nests. 



1 egg each, 



2 eggs each, 



3 " " 

 Totals, 



Muskeget Island, July 3, il 

 Terns. 

 Eggs. 



J 73 



3S5 



95 



4 



~65~8 



173 



770 



285 



16 



5 



:2 + 9 



Live chicks, 83 



Dead " 26 



3 nests with 1 egg and 1 chick. 



3 " "2 eggs " 1 " 



1 nest '« 3 " "1 " 



Laughing Gulls. 

 Eggs- 



Noted a number of empty nests, 

 the eggs of which had probably 

 been previously hatched. I saw 

 but few chicks, however. 



