There is much literature on nest box conflicts between bluebirds, swallows, and house sparrows, but smaller and less conspicuous species also experience intense birdhouse competition. Use entrance hole excludersīluebird populations have experienced an impressive comeback, but chickadees, wrens, titmice, flycatchers, and nuthatches need a chance to recover as well. ![]() Some nest-box landlords claim success while others mixed results. The effectiveness or success rate of some of these techniques varies widely. Reduced competition for birdhouses leads to higher reproductive productivity in bird populations that have already been decimated. In the context of this article, reducing birdhouse competition means encouraging cavity-nesting birds to breed and thus preventing them from fighting, squabbling over, and even killing each other over nest boxes. How to reduce birdhouse competition among cavity-nesting birds? Both terms are used interchangeably in this article. This article discusses ways to reduce competition between cavity-nesting birds, allowing bluebirds and other less conspicuous species to breed successfully.īirdhouses are also known as nest boxes. Some cavity nesters may not nest or nest in suboptimal cavities in some breeding seasons due to a lack of suitable nesting cavities. ![]() Nesting boxes for bluebirds and other native species can be beneficial. In addition, the populations of the more aggressive and tenacious cavity-nesting European starlings and house sparrows have exploded in numbers, adding competitive pressure to native species.Īll birds that use cavities for nesting, except for woodpeckers, are secondary users this means they rely on holes dug by woodpeckers and other types of naturally occurring cavities. Nest boxes are in high demand because nesting cavities are scarce. Competition between cavity-nesting birds can result in physical fights, egg destruction, and the death of the young. We enjoy watching birds build nests and raising their young in our birdhouse aks nest boxes.
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