Benjamin's Wild Birds: Photo gallery and journal by a birding teen.
Birding Break: Hawk Mountain: Virtual hawkwatching tour.
Birding Club of Delaware County: Meetings, field trips, and Rose Tree Park HawkWatch.
Delaware Valley Ornithological Club: Founded in 1890, meets at Academy of Natural Sciences in Philadelphia. Programs, field trips, and conservation sites.
Eastern PA Birding: Photos of rarities in east-central Pennsylvania and from other birding adventures by Dave DeReamus.
Hawk Mountain Sanctuary: Bird refuge offering opportunities to view migrating raptors. Site contains counts of sightings.
McConaughy's Birding Page: Central Pennsylvania Birdline, hawk watch results, and photos and descriptions of rarities.
National Wildlife Refuge Bird Checklists: Seasonal checklists for Erie NWR and John Heinz NWR.
PABIRDS: Searchable archives of the bird discussion list for Pennsylvania.
Pennsylvania Rare Bird Alerts: Recent transcripts of 6 RBAs from different areas of the state.
Peregrine Falcon Nest: Web cam of a falcon nest at the Rachel Carson State Office Building in Harrisburg. Includes history of this site, photo gallery, and links.
Powdermill Bird Banding: Exceptional close-up photos and information about banding birds at the Powdermill Nature Reserve in Westmoreland County.
Powdermill Nature Reserve Avian Research: Overview of bird research at this biological field station of the Carnegie Museum of Natural History.
State College Bird Club: Serves the State College, Centre County area. Schedule of events, hotspots, breeding bird atlas, rare bird alerts, and birding resources.
Tussey Mountain Eaglewatch: Photo gallery and data from Rothrock State Forest near State College.
Twin Tiers Birding: Birds and birding in northern Pennsylvania and southern New York state. Sections for Bradford and Tioga counties, PA, and Broome, Chemung, Schuyler, Steuben, and Tioags counties, NY.
Venango County Birds: Sightings and events.
West Chester Bird Club: Programs and field trips.
Westmoreland County Birding: Overview, sightings, list of birding spots, and links.