Plate XVII. May Nests (cont.) and a June Nest. 
Fig. 1. Nest No. 14, May 4, 1926, in the streetway in the Evan- 
ston, Ill., subdivision. One of the very few nests of the Prairie 
palustris, dead blades of which arch over the nest on the north. 
New leaves of this grass are coming through the old. 
Fig. 2. Nest No. 20, June 6, 1926, in the Evanston, IIl., subdivision. 
It contains two Cowbird and three Lark eggs, the only case of 
Cowbird parasitism in thirty-two observed nestings of the Prairie 
Horned Lark i . 
y rain, extends to the southeast (right-hand side) and a dan- 
delion plant (Tararacum officinale) arises on the south. 
