134 BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VOL. 4, NO. 4. 
1883. Harting, James Edmund. 
Sketches of Bird Life, p. 285. 
'05. Herrick, Francis Hobart. 
The Home Life of Wild Birds, Fig. 14, p. 34. 
'04. Hornaday, Wm. T. 
The American Natural History, p. 297. 
1892. Mackay, Geo. H. 
Habits of the American Herring Gull (Larus argen- 
tatus smithsonianus) in New England. 
In The Auk, Vol. IX, p. 222. 
1868. Morris, Rev. F. O. 
A History of British Birds, Vol. VI, p. 86. 
1895. Ridgway, Robert. 
The Ornithology of Illinois. 
In Natural History Survey of Illinois, Vol. II, Part I, 
p. 242. 
1898. Sharpe, R. Bowdler. 
Sketch Book of British Birds, p. 195. 
EXPLANATION OF PLATES. 
Plate 1. 
Nest of Caspian Tern containing three eggs. Taken 
with a kodak July 1, 1905. Out of focus and fur- 
ther obscured by reproduction. 
Young Herring Gulls standing near my tent. 
Nest of Herring Gull with three eggs taken July 6, 1906. 
Another gull nest with recently born young, taken on 
same day. 
Plate 2. 
Young Herring Gull taking food from bill of adult ; 
severely wounded young crouching by log. 
Two gulls performing "dance." 
Adult attempting to regurgitate a fish for young. 
Another adult has come near while this one was un- 
able to resent its approach, has driven the young 
back and stands ready to seize the expected fish. 
Adult gulls "challenging." 
Fig. 1. 
Fig. 2. 
Fig. 3- 
Fig. 4. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
