Photo © Douglas Wipf

A New Outcome Code

Have you ever had a nest taken over by another bird, while the original nest was still active? This is commonly witnessed when an invasive species, such as a House Sparrow or European Starling, takes over the nest of another bird that was already in progress; however, it can also involve two native species (e.g., a native House Wren may take over a chickadee nest, as in the photo above). Now, you can report this result to NestWatch with a new outcome code, “Failure due to nest takeover by another bird.” If known, you can also report the bird species that took over the nest.