LIST OF ILLUSTRATIONS 



9 



Unless otherwise stated the illustrations are from photographs 

 from nature by the author. The photographs of Museum groups 

 are from exhibits in the Museum of the Zoological Division of the 

 Geological and Natural History Survey 'of Minnesota located in 

 the Animal Biology Building, University of Minnesota, Minneapolis. 

 The groups were constructed by Mr. Jenness Richardson, Museum 

 taxidermist. The Museum is open to the general public. 



Young Rose-breasted Grosbeaks 4 



Young Cooper's Hawks 10 



Young Scarlet Tanagers 11 



Young White-throated Sparrows 26 



Franklin's Gull Chicks. Photograph by Jenness Richardson.. 27 



Young Migrant Shrikes 28 



Young Baltimore Oriole 29 



Great Horned Owl. Photograph of mounted bird 33 



Young Tree Swallows and nesting hole 37 



Young Bluebirds 39 



Horned Lark. Drawing by Kako Morito 42 



Young Yellow-headed Blackbirds 47 



Nest, eggs, and young of Black-billed Cuckoo 58 



Florida Gallinule Chick 59 



Black Tern, nest and eggs. Photograph by Jenness Richardson 60 



Nest and eggs of Mallard Duck. Photograph by L. O. Dart. 61 



Nest and eggs of Canvas-back Duck 62 



Nest and eggs of Bob- white or Quail 63 



Nest and eggs of Ruffed Grouse. Photograph by L. O. Dart. 64 

 Plassenger Pigeon, nest, and egg. Photograph of Museum 



group 65 



Nest and young of Broad-winged Hawk 66 



Young Sparrow Hawks. Photograph by Jenness Richardson. 67 



Young Screech Owl 68 



Ruby-throated Hummingbird drinking sap 69 



Sapsucker or Yellow-bellied Woodpecker 70 



Young Downy Woodpeckers 71 



Whip-poor-will on nest 72 



Nesting place and eggs of Whip-poor-will 73 



Nest of Oven-bird. ... 74 



