Our club of dedicated volunteers maintain about 5000 birdhouses in the Calgary area. Most are set up on fence posts, three per mile. Because of these, about 1000 Mountain Bluebird pairs nested in 2009.
Saturday, February 12, 2011
Bluebirds depend on birdhouses
Our club of dedicated volunteers maintain about 5000 birdhouses in the Calgary area. Most are set up on fence posts, three per mile. Because of these, about 1000 Mountain Bluebird pairs nested in 2009.
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