PBS
Pbs Nova: Flying Casanovas
Here's another great website that is a companion to a PBS television series. This time the show was called "Flying Casanovas" and the topic is bowerbirds. A lot about courtship and behavior in these bird groups. There's even a matching...
San Diego Zoo Global
San Diego Zoo: Birds
This resource provides detailed information about birds, as well as several pictures.
CK-12 Foundation
Ck 12: Biology: Bird Reproduction
[Free Registration/Login may be required to access all resource tools.] Describes the reproductive behavior of birds.