Took these pictures in central Illinois. They were in a wooded area hanging over a creek. I have never seen a hanging birds nest in person. The top nest is about 6 inches across. The bottom nest is about 4 inches across. Which species of bird could they be from? Thank you, Lonnie
Birding Nevada
NestWatch To Clean Or Not To Clean Your Nest Box? - NestWatch
NestWatch A Tale of Two Boxes: When Pairing Doesn't Promote
Bird hanging upside down from nest hi-res stock photography and
Understanding and Identifying Bird Nests – Colorado Virtual Library
Birds That Build Nests With Domes May Be Doomed - The New York Times
What Nesting Materials Are Safe for Birds?
Another bird ID quiz. Can you ID these two birds? Hint: Don't let
How to Identify a Bird Nest
Choose the Right Birdhouse
10 Birds That Build Hanging Nests
Which Bird Made That Nest?, Winter 2009, Articles
American Robin, Kingbirds, Bluebirds and Chickadees of North America