While biking near a reservoir in Colorado I saw a pair of swallows taking turns entering this box with an abundance of bugs and exiting as soon as the other appeared. .

Broad-tailed humingbird chicks in nest

I had the amazing opportunity to find this nest in our yard and watch it from eggs to fledging. What a treat!

Western Bluebird nestlings in the “Blue Young” stage (2-4 days old).

Photo taken during weekly Nest Box monitoring for Jefferson County Open Space.
First babies of the season for this trail.

Cornell Lab of Ornithology

Cornell Lab of Ornithology