12 IOWA STUDIES IN NATURAL HISTORY 
EXPLANATION OF PLATES 
PLATE I— 
Fig. 1. View of Maryland Yellow-Throat habitat, with blind in position 
at nest. 
Fig. 2. View of blind at nest showing woodland background, and prairie 
foreground. 
Fig. 3. View of blind at nest showing lake background and prairie 
foreground. 
PLATE II— 
Fig. 1. View of nest showing location in a tuft of grass, latter parted 
to reveal nest. 
Fig. 2. Nearer view of nest showing three eggs of the Yellow-throat, 
and one of the Cowbird. 
PLATE IlI— 
Fig. 1. Male Yellow-throat feeding young in nest. 
Fig. 2. Female Yellow-throat feeding young. The variation in path of 
approach to the nest by the two parents, as indicated by their 
positions in the figures of Plate III, was quite uniform and 
constant. 
PLATE IV— 
Fig. 1. Male Yellow-throat removing the excreta sac from one of the 
young. 
ane gun 
