45 



Plate XII 100 



Development of the young of the Redwing. 



Fig. 1. — Just hatched. Fig. 2. — Five days old. 

 Plate XIII 100 



Development of the young of the Redwing. 



Fig. 1. — Nine days old. Fig. 2. — Ten days old. 

 Plate XIV 102 



Fig. 1. — Young Redwing, eleven days old. 



Fig. 2. — Female Redwing approaching the nest. 

 Plate XV 102 



Fig. 1. — Female Redwing delivering the food. 



Fig. 2. — Inspection after feeding. 

 Plate XVI 102 



Cleaning the nest. 



Fig. 1. — Searching the nest for excrement. 



Fig. 2. — Carrying away the excrement. 

 Plate XVII 108 



Fig. 1. — Nest overturned by the growth of the vegetation. 



Fig. 2. — Nest compressed by the growth of the vegetation. 

 Plate XVIII 120 



Animal content of typical stomachs. 



Fig. 1. — Secured on uplands, March 7-April 21. 



Fig. 2. — Secured in marsh, March 7-April 21. 



Fig. 3. — Secured in marsh, April 21-May 7. 

 Plate XIX 122 



Animal content of typical stomachs. 



Fig. 1 .—May 7-26. Fig. 2.— May 26- June 16. Fig. 3.— June 16 

 -July 1. 

 Plate XX 123 



Fig. 1. — Abnormal feet of Redwing, caused by the mite, Cnemi- 

 docoptes fossor. 



Fig. 2. — Gizzards of Redwings, showing correlation between food 

 and musculature. 

 Plate XXI 124 



Stages in the development of the testes and ovaries of Redwings, 

 showing the rate of growth. 

 Plate XXII 126 



The Red-winged Blackbird — not specialized, but eminently 

 adapted to its environment. 



Text Figures. 



Fig. 1. — Showing the rate of growth of the cat-tail (Typha lati- 

 folia) page 62 



Fig. 2. — Showing the rate of growth of the sedge {Scirpus fiuvia- 

 tilis) page 64 



