ID that bird!
http://birds.audubon.org/birdid/quick-guide

eBird – great for finding bird sightings
http://ebird.org/content/ebird/

Bird watching contacts and info around the world
http://birdingpal.org/

The Cornell Lab of Ornithology
http://www.birds.cornell.edu/Page.aspx?pid=1478&ac=ac

Montgomery County Lands Trust
https://natlands.org/news/natural-lands-trust-and-montgomery-county-lands-trust-join-forces/

Perkiomen Watershed Conservancy
http://www.perkiomenwatershed.org/

Valley Forge Audubon Society
http://valleyforgeaudubon.org/