^°ls^^^] Mackay, TJie Terns of Penikcse Islattd, Mass. 



283 



would seem to be better adapted for their breeding purposes; 

 while there I shot a number of dark breasted birds in the hopes 

 that some of them might prove to be S. pat-adiscea^ but they were 

 all Wilson's. 



As stated, Penikese Island is composed of two parts connected 

 by a stony beach ; the southeast portion is called the neck, while 

 the other is the main island. Thinking there might possibly be 

 some future advantage in keeping the account of the nests and 

 eggs found on each, separate, I have so arranged them, and also 

 those found on Gull Island. All the eggs observed were normal, 

 there being nothing unusual to record. 



Main Island. 



Penikese. 



Neck. 



130 Nests of I egg each, in all 130 eggs 

 386 " 2 eggs each, " 772 " 



6 



7 



757 



4 



5 

 Vagrant eggs 



6S4 



24 

 35 

 35 



1680 



135 Nests of I egg each, in all 135 eggs 



308 



208 



5 



3 



659 



I4I9 



40 



90 



Total for Penikese Island, 1416 nests, 2055 eggs. 

 " Gull Island. 40 " 88 " 



" Vagrant eggs 46 " 



The 46 eggs designated as ' vagrant ' were found by themselves 

 with no appearance of their having been deposited by the birds 

 where found. 



Gil// Is/and is but a small gravelly shoal of about half an acre 

 in extent. It is elevated only three or four feet above high water 

 mark. As far as I have been able to learn, it is at present only 



