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Barn Swallow (Hirundo rustica)
Breeding Bird Atlas blocks All observations (not just breeding activity) between 1987-1995 (9 square miles/block) |
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Barn Swallow (Hirundo rustica)
NatureMapping observations by townships during the breeding season. (36 square miles = township) |
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Barn Swallow (Hirundo rustica)
NatureMapping observations by townships throughout the year. |