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

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