370 Bird -Lore 



II. In Burrows in the Ground: 



A. Nesting in colonies in sand-banks Bank Swallow 



AA. Nesting singly 



B. Drilling its own burrow Kingfisher 



BB. Utilizing some other burrow Rough- winged Swallow 



III. Hanging or Semi-pensile Nests: 



A. In reeds or swamp bushes 

 B. Open above 



1. A platform only slightly hollowed Least Bittern 



2. Deeply hollowed Red-winged Blackbird 



BB. Spherical nests — opening on side. . Long- and Short-billed Marsh Wrens 



AA. In upland bushes and trees 



B. Small, less than 2 inches deep inside, fully suspended 



1. In berry bushes White-eyed Vireo 



2. In low branches or saplings Red-eyed Vireo 



3. In evergreens (usually) Blue-headed Vireo 



4. In middle of tree Yellow throated Vireo 



5. In tree top or outer branches Warbling Vireo 



BB. Small, semi-pensile, partially supported Acadian Flycatcher 



BBB. Larger, over 2 inches deep inside 



1. Of dried grasses, sometimes partially supported. .. .Orchard Oriole 



2. Of iibers, strings, and the like Baltimore Oriole 



IV. In Holes in Trees or in Bird-Boxes: 



A. Nesting in colonies '. Purple Martin 



AA. Nesting singly 



B. Drilling holes, no nest at bottom 



1. Opening about i '/^ inches Downy Woodpecker 



2. Opening about 134 inches Hairy Woodpecker. 



3. Opening about 2 inches Red-headed Woodpecker 



4. Opening over 2 inches P'licker 



BB. Using old Woodpecker holes or natural cavities of the same size or bird- 

 houses with similar openings, building a nest at bottom of cavity. 



1. Nest of sticks lined with feathers House Wren 



2. Nest entirely of grasses Bluebird 



3. Nest of straws and feathers 



a. Nest cuplike, open above Tree Swallow 



b. Nest spherical or partially arched. . .House (English) Sparrow 



4. Nest of fibers, moss, wool, and feathers. . Chickadee and Nuthatch 



5. Nest usually containing a cast snake-skin Crested Flycatcher 



BBB. Using Flicker holes or natural cavities of similar size, no nest built 



Sparrow Hawk, Screech Owl, and Saw-whet Owl 



BBBB. Using larger natural cavities 



Barred Owl, Great-Horned Owl, and Wood Duck 



V. Containing Sticks or Large Twigs: 



A. Bulky nests in trees, 15 to 60 inches outside diameter 



1. Very large, 30 to 60 inches Fish Hawk and Bald Eagle 



2. Smaller, no lining, flat Herons 



3. Hollowed, lining of bark Crow and Owls] f^;^;^l"^p?n^° 



/ Red-shouldered 



4. Hollowed, lining of fresh leaves or evergreens. . Hawks < QQQp^'^',g'^'' 



V Sharp-shinned 



5. Spherical nests Squirrels 



AA. Smaller nests, less than 15 inches outside 



B. Cuplike, in chimneys, hollow trees, or silos Chimney Swift 



BB. Otherwise 



C. Platform, very shallow 



1. No lining Mourning Dove 



2. A little lining Cuckoos 



