https://dxnest.com/yen-hu-chung-san/
As summer draws to a close, bluebirds and swallows battle over their respective territories, often fighting each other directly as they compete for the same nesting sites. The result is damaged flight feathers, tossed eggs, and destroyed young. The problem can be avoided with a few simple steps, however, that will allow bluebirds to share space with swallows while maximizing the success of both species. The key to creating a tree swallow house is to have enough room for all three birds. The ideal birdhouse is at least 15 inches high, and the entranc
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