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Birds--Eggs
Horned Lark (Eremophila alpestris)
3
Birds--Collection and preservation
1
Birds--Geographical distribution
1
Birds--Nests
1
Cackling Goose (Branta hutchinsii)
1
Common Tern (Sterna hirundo)
1
Great Horned Owl (Bubo virginianus)
1
Henslow's Sparrow (Ammodramus henslowii)
1
Lapland Longspur (Calcarius lapponicus)
1
Natural areas
1
Nelson's Sharp-tailed Sparrow (Ammodramus nelsoni)
1
Northern Pintail (Anas acuta)
1
Northern Saw-whet Owl (Aegolius acadicus)
1
Ornithological literature
1
Ornithology--Methodology
1
Photography of birds
1
Red-shouldered Hawk (Buteo lineatus)
1
Snow Goose (Chen caerulescens)
1
Whimbrel (Numenius phaeopus)
1
Yellow-throated Warbler (Setophaga dominica)
1
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