Snowy Owl
Hudsonian Godwit
Black-bellied Plover
Northern Harrier
Belted Kingfisher
Horned Grebe
Scarlet Tanager
Ring-necked Pheasant
Laughing Gull
Hooded Merganser
Broad-winged Hawk
Yellow-throated Warbler
Magnolia Warbler
Rose-breasted Grosbeak
Blue-gray Gnatcatcher
Grasshopper Sparrow
American Robin
Northern Parula
Eastern Meadowlark
Hooded Warbler
Prairie Warbler
Bobolink
American Goldfinch
Eastern Kingbird
Northern Shoveler
Bay-breasted Warbler
Black-crowned Night-Heron
Ring-necked Duck
Black-and-white Warbler
Northern Saw-whet-owl
Horned Lark
Purple Martin

To get started, visit the PGC’s Heron Colony Observation Survey page. By following the protocol you'll ensure your fieldwork will help science and not disrupt nesting herons. Submit your completed survey forms to: This email address is being protected from spambots. You need JavaScript enabled to view it..

With such widely distributed species and limited resources, the PGC relies on the help of volunteers like you to improve our understanding of their distribution and numbers.  Even though many heron colonies are documented across the Commonwealth, you may know about colonies that the PGC does not. Your contributions are critical to improving PGC’s information and developing the most complete picture possible of the current status of Pennsylvania's heron populations. The information will be used to update the Pennsylvania Natural Heritage Program database and provide protection for colonies.

But remember: as much as we want all the nests counted, the birds come first.  Their nests should be monitored with binoculars from a safe distance. Do not approach nests.

For more information contact:

Patricia Barber, Endangered Species Biologist

Pennsylvania Game Commission

2001 Elmerton Avenue

Harrisburg, PA  17110-9797

717-303-4482