National Audubon Society
Pennsylvania Audubon Society
New Jersey Audubon Society

Birding Events

Great Backyard Bird Count
Christmas Bird Count

Birding Resources

Pennsylvania eBird
Global Birding Pal
Bird Source: Birding With a Purpose
Bird Watching
eNature Birding
The Virtual Birder
American Birding Association
Delmarva Ornitological Society
Peterson Field Guides
Cornell Lab of Ornithology
Pennsylvania Breeding Bird Atlas
Birding on the Net
Delaware Valley Ornithological Club
PA Peregrine Falcon Webcam

Conservation and Conservation Trusts

Natural Lands Trust
Willistown Conservation Trust
Montgomery County Lands Trust
Perkiomen Watershed Conservancy
Chester – Ridley – Crum Watersheds Association
National Wildlife Refuge System

Local Hotspots

Peace Valley Nature Center
Hawk Mountain Sanctuary
John Heinz National Wildlife Refuge