PBS
Pbs: Champion Birds
The PBS video series "The Life of Birds" is accompanied with this site. There are articles about several aspects of birds and their behavior. This one chronicles the highest, fastest, and most extreme birds. There are lots of examples.
PBS
Pbs: The Life of Birds: Bird Songs
The diversity of bird songs is covered in this article from the companion site to PBS's "The Life of Birds." They can communicate about size, aggression, territory, mating, food, and many other things and they can produce a range of...
University of Florida
Flmnh: Gallery of Southeastern u.s. Birds
These Florida Museum of Natural History bird photos may be used for reports and projects. Recordings of bird calls are also available.
Other
Bird Hand Book
Although brief, this site features images from Victor Schrager's "Bird Hand Book". Some brief descriptions are also offered.