www.audubon.org/educate offers a variety of bird related leaning products Audubon Adventures classroom resource kits for teachers and nature educators.
Avian Knowledge Network aggregates bird data from a number of sources www.avianknowledge.net
Birders United is a political site dedicated to building a new American political force dedicated to preserving birds and their habitats. www.birdersunited.com
Ebird is a great place to report bird sightings www.ebird.com