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Tachycineta bicolor (Vieillot 1808)
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n275_w1150
cc-publicdomain
Biodiversity Heritage Library
Flickr BHL
Recueil de divers oiseaux étrangers et peu communs A Nuremberg :Chez les Héritiers de Seligmann,1768-1776.
biodiversitylibrary.org/page/41947904
n427_w1150
cc-publicdomain
Biodiversity Heritage Library
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Useful birds and their protection Boston, Mass.,1913
biodiversitylibrary.org/page/14466200
n202_w1150
cc-publicdomain
Biodiversity Heritage Library
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The birds of Somerset Hills [New Jersey] :Published by the author,1912
biodiversitylibrary.org/page/14416591
n252_w1150
cc-publicdomain
Biodiversity Heritage Library
Flickr BHL
Illustrations of the nests and eggs of birds of Ohio. v.2 Circleville, Ohio, U.S.A. :[s.n.],1886
biodiversitylibrary.org/page/34908487
n198_w1150
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Biodiversity Heritage Library
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Birdcraft :. New York :Macmillan Co.,c1897..
biodiversitylibrary.org/page/7832258