GATES—SUMMER Birp LiFe IN ILLINOIS. 11 
SUMMER Birps oF THE AQUATIC ASSOCIATION. 
Normal or strictly aquatic species— 
Water Inhabitants— 
d Pied-billed Grebe nf r one pair in 1910. 
d Double-crested Cormorant n f r Two flocks of 7 and 26 birds 
in Mud Lake and in Flag & 
Thompson's Lakes respect- 
ively. 
(d Wood Duck nfr irregularly, not present in 
1910) 
d Red-breasted Merganser f r two birds seen three times. 
d Mallard f r one seen a few times. 
d Lesser Scaup Duck f r one bird seen twice 
d Blue-winged Teal f r one bird seen once. 
Air Inhabitants— 
d Black Tern nf ra colony of about 70 birds 
d Common Tern n?f ra few birds with the above. 
Semiaquatic species— 
Food Submerged 
d Belted Wingfisher f common 
Food above water 
d?Mississippi Nite two birds in the air over the 
[llinois River, June 29, 1910. 
s Red-headed Woodpecker f several 
s Nighthawk f scarce 
d Chimney ‘Swift f r not common 
s Wingbird £ one pair 
s Phoebe it common 
s Bronzed Grackle f common 
s Purple Martin f scarce 
d Cliff Swallow f rare 
d Tree Swallow f abundant 
d Bank Swallow ify few 
a Robin f scarce 
a Bluebird f rather scarce 
THE SPRAND ASSOCIATIONS. 
The strand is not well represented in this region on account 
of the persistent high water in the Illinois River and adjacent 
lakes, following the opening of the Chicago drainage canal. 
Wherever it occurs it is of either a muddy or sandy textur. 
