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Birds--Geographical distribution
Birds--Collection and preservation
2
Birds--Identification
2
American Dipper (Cinclus mexicanus)
1
American Woodcock (Scolopax minor)
1
Barn Owl (Tyto alba)
1
Birds--Eggs
1
Birds--Food
1
Birds--Infancy
1
Black Rail (Laterallus jamaicensis)
1
Black Scoter (Melanitta nigra)
1
Burrowing Owl (Speotyto cunicularia)
1
Cackling Goose (Branta hutchinsii)
1
Cinnamon Teal (Anas cyanoptera)
1
Classification
1
Common Nighthawk (Chordeiles minor)
1
Common Raven (Corvus corax)
1
Common Redpoll (Acanthis flammea)
1
Dark-eyed Junco (Junco hyemalis)
1
Eastern Whip-poor-will (Antrostomus vociferus)
1
Great Gray Owl (Strix nebulosa)
1
Great Horned Owl (Bubo virginianus)
1
Guido Louis
1
Henslow's Sparrow (Ammodramus henslowii)
1
Iowa State Teachers College
1
McCown's Longspur (Rhynchophanes mccownii)
1
Natural areas
1
Nelson's Sharp-tailed Sparrow (Ammodramus nelsoni)
1
Northern Flicker (Colaptes auratus)
1
Ornithological literature
1
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