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Ornithology / Bluebirds / Passer / Mountain Bluebird / Nest box / Bird nest / House Sparrow / Nest / House Wren / Zoology / Biology / Passerida


Helping Bluebirds Survive and Thrive Until fairly recently, Eastern bluebirds (Sialia sialis) were uncommon, mainly due to loss of habitat (open space and _snags_), and competition for nesting sites from introduced, aggr
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Document Date: 2015-04-23 10:20:09


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