Photo © Glenda Simmons

Nestwatch Blog


Understanding an Ecological Trap

Birds don’t choose where to place a nest arbitrarily…they rely on signals from the environment, such as cavity size, food availability, and abundance of predators nearby. But sometimes those signals become uncoupled from actual habitat quality. Learn how you can reduce the risk of setting an “ecological trap.”


Predator Guards Carry Their Weight

It took just four years to answer the decades-old question of “Are predator guards on nest boxes actually helpful?” With the power of citizen science, NestWatchers helped us use the best science available in a national study of cavity-nesting birds.



Eastern Bluebirds Using Open Cup Nests

In May 2017, Jason Estep of Ohio witnessed something incredibly rare, or at least, rarely seen. An Eastern Bluebird female consistently sat in the old nest of an American Robin over an eight day period. Although the nest was too high to glimpse the contents, it is thought that she was incubating eggs. But Jason isn’t the only one to find this kind of oddity this year.