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Henslow's Sparrow (Ammodramus henslowii)
Barred Owl (Strix varia)
1
Bird watching
1
Birds--Collection and preservation
1
Birds--Eggs
1
Birds--Food
1
Birds--Geographical distribution
1
Birdsongs
1
Brown Thrasher (Toxostoma rufum)
1
Cackling Goose (Branta hutchinsii)
1
Chipping Sparrow (Spizella passerina)
1
DuMont
1
Families
1
Horned Lark (Eremophila alpestris)
1
Janetta A
1
Natural areas
1
Nelson's Sharp-tailed Sparrow (Ammodramus nelsoni)
1
Northern Cardinal (Cardinalis cardinalis)
1
Ornithological literature
1
Ornithology--Methodology
1
Ruby-crowned Kinglet (Regulus calendula)
1
Snow Bunting (Plectrophenax nivalis)
1
Snow Goose (Chen caerulescens)
1
Snowy Owl (Bubo scandiacus)
1
Whimbrel (Numenius phaeopus)
1
Yellow-throated Warbler (Setophaga dominica)
1
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