Important Bird Areas


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Pennsylvania IBAs by Type

IBA Priority Number Acres
Global 6 22,219
Continental 7 47,582
State 73 1,386,666
Total 86 1,456,467

Formed in 1996, Pennsylvania developed the first statewide Important Bird Area (IBA) program in the country. A group of scientific advisors (known as the Ornithological Technical Committee) has identified over 80 IBA sites encompassing over two million acres of Pennsylvania's public and private land. These areas include migratory staging areas, winter roost sites and prime breeding areas for songbirds, wading birds, and other species. Pennsylvania is making an important contribution to the conservation of bird habitat in the western hemisphere. Penn's Woods are critical to many interior forest birds, providing nesting habitat to 17% of the world's Scarlet Tanagers and 9% of the Wood Thrushes. By focusing attention on the most essential and vulnerable areas, the IBA program helps to promote proactive habitat conservation, benefiting birds and biodiversity. Audubon Pennsylvania works with a multitude of partners across the Commonwealth to advance the conservation of Important Bird Areas. For more information on the individual sites, please use the map to the right to navigate to your desired location. See Feature News - and submit your bird observations - on {link:Pennsylvania eBird|} {link:Frequently Asked Questions about the IBA Program|}

Site Name Status Prioritysort ascending Counties IBA Criteria
Blue Marsh Lake Recognized State Berks D4i, D4ii, D4v, D5
Lake Ontelaunee Recognized State Berks D3, D4ii, D4v
Codorus State Park Recognized State York D4i
Kiwanis Lake Rookery Recognized State York
Quakertown Swamp SGL 139 Recognized State Bucks D3
Peace Valley Park Recognized State Bucks D4ii, D4iii
Unami Creek Valley Recognized State Bucks, Montgomery D3
Green Lane Reservoir Recognized State Montgomery D4i, D4ii, D4v
Glen Morgan Lake Recognized State Berks D3, D4ii, D4iii
Great Marsh Recognized State Chester D3
Upper Ridley/Crum Recognized State Delaware D3, D4ii, D4iii
Octoraro Reservoir Recognized State Chester, Lancaster D3, D4i, D4ii, D4v
State Line Barrens Recognized State Chester, Lancaster D3, D4i, D4vi
Conejohela Flats Recognized State Lancaster D3, D4ii, D4v
Creek Road Area Recognized State Lancaster D3, D4i, D4iii
Roderick Wildlife Preserve - SGL 314 Recognized State Erie D3
Pymatuning, Hartstown Complex Recognized State Crawford D3, D4ii, D4v
Cussewago Bottom Recognized State Crawford, Erie D3
Hemlock Hill Research Area Recognized State Crawford D5
Erie National Wildlife Refuge Recognized State Crawford D3, D4ii, D4v