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All About Birdhouses

Managing Nest Box Competitors

Introduction Sometimes nest boxes are used by species for which they were not intended. Wasps, mice, squirrels, and other wildlife can compete with native cavity-nesting birds for nest sites. Here are some tips for discouraging nest box usurpers. House Wrens House Wrens are sometimes considered problematic. These sprightly birds are very territorial and may use […]

Frequently Asked Questions

What should I do if another bird interferes with a nest I’m watching?

If another bird takes over the nest, while the original birds had eggs or young in the nest, there is a special way to report this to NestWatch: Summarize the original bird’s nest and choose the outcome “Failure due to takeover by another bird” and record the species if you know it. Finish summarizing the […]

Cornell Lab of Ornithology

Cornell Lab of Ornithology