1915 ] 
Cahn: Ecology of Wingra Springs Region 
163 
Sayomis phoebe (Latham). Phoebe. 
Common in zone six and also in the outer area of zone seven. 
A single nest was found among the rocks by the springs. Ow- 
ing to the lack of nesting sites, probably, the species is not 
as common as it might be, as food is abundant. 
Nuttallomis borealis (Swainson). Olive-sided Flycatcher. 
Common in the woods during the spring migrations only. 
Myiochanes virens (Linnaeus). Wood Pewee. 
Common in zone seven, where it breeds and remains almost 
continuously. The stomach of one, shot on June 2, contained 
eleven small May-flies. 
Empidonax minimus (W. M. & S. F. Baird). Least Flycatcher. 
Found in the woods only on the spring migration, and not 
commonly then. 
Otocoris alpestris alpestris (Linnaeus). Horned Lark. 
Common in the open fields during the months of snow. The 
food consists entirely of seeds, and apparently of any seed- 
bearing plant available. 
Otocoris alpestris praticola Henshaw. Prairie Horned Lark. 
Found in abundance as soon as the snow begins to melt, and 
often nests before the ground is entirely clear. 
Cyanocitta cristata cristata (Linnaeus). Blue Jay. 
Common in both zones six and seven, breeding in the former. 
Although the formation teemed with bird life, there was not 
a sign of damage caused by the numerous jays present. 
Corvus brachyrhynchos brachyrhynchos Brehm. Crow. 
Abundant in zones seven and eight, and quite often seen in 
zone six. Were it not for the carcass of a horse dumped in 
the latter zone, and upon which many crows fed daily, they 
would be listed as uncommon in said zone. Breeds in the inner 
area of the woods. 
Dolichonyx oryzivorus (Linnaeus). Bobolink. 
Common in zone eight, where the species breeds in numbers. 
Food consists of grain when available, together with insects. 
Molothrus ater ater (Boddaert). Cowbird. 
Present throughout the swamp and fields in numbers. Its 
eggs were found in the nests of: Yellow warbler, red-winged 
blackbird, swamp and song sparrows, and on one occasion three 
eggs of the species were found in a catbird nest containing one 
egg of the owner, and evidently deserted. 
