50 EGG CHECK LIST OF NORTH AMERICAN BIRDS. 
658.  Kittiwake Gull—rissA TRIDACTYLA. Yellowish-buff, spotted and 
blotched with rounded marks of brown and lilac of varying shades, oval; 
two or three; 2/25 by 1.65,v. Nests on rocky cliffs. Arctic regions. 
660. Glaucous Gull; Burgomaster—rLaRrus GLAucus. Varying from 
bluish-white to dark brownish-yellow, spotted, blotched and sprinkled 
with brown and lilac of varying shades, oval; three or four; 2.95 by 
2.25,v. Nests on rocky cliffs. | Arctic seas, Labrador. 
663. Great Black-backed Gull—rarus marinus. Varying from a 
bluish-white to deep yellowish-brown, spotted and blotched with reddish- 
brown and lilac of various shades, oval; three or four; 2.95 by 2.25. 
Nests on rocky cliffs. North Atlantic, Labrador. 
666. Herring Gull—Larus ARGENTATUS. Varying from bluish-white 
to deep yellowish-brown, spotted and blotched with brown and lilac of 
varying’ shades, oval;, three’or fours.2.75- by 1.85)v.... Nests) ony the 
eround, on rocky cliffs, and sometimes in trees. N. A. 
666a. American Herring Gull—LARUS ARGENTATUS SMITHSONIANUS. 
Bluish, greenish or brownish-olive, spotted and blotched with brown, 
slate and lilac, very variable in shape, size and distribution; three; 2.80 
by 1.90,v. Nests on the ground. ‘The nest is large and bulky. N, A. 
669.  Ring-billed Gull—LARUS DELAWARENSIS. Varying from bluish- 
white to dark-brown, spotted and blotched with brown and lilac of various. 
shades, oval; three to four; 2.78 by 1.65,7. Nests on the ground or on 
cliffs. . N. A. 
673. Laughing Gull—LaRus ATRICILLA. Varying from bluish-white to 
greenish ash, spotted and blotched with brown, umber and lilac of varying 
shades, oval; three or four; 2.10 by 1.62,7. Nests on the ground in 
sandy places. Texas to Mass, 
675. Bonaparte’s Gull—LakUS PHILADELPHIA. Varying from green- 
ish to brown, spotted and blotched with brown, umber, and lilac of various 
shades, oval; three or four; 1.40 by 1.15,v.. Nests on the ground’ Gr 
rocky ¢liffs. N. A. 
677. Sabine’s Gull—xrEMa SABINEI. Deep greenish-brown, obscurely 
spotted and blotched with darker shades of the same, oval; two; 1.45 by 
1.05,v7. Eggs placed on the ground in sandy places. Nova Scotia, northward, 
679. Gull-billed Tern—sTerNA ANGLICA. Varying from yellowish-buff 
to greenish, spotted and blotched with yellowish-brown and lilac, oval; 
three or four; 1.78 by 1:32,v. Eggs laid on the ground in sandy places. 
EY vUiese 
