Important Bird Areas

Callen Run Research Area

Pennsylvania

Callen Run Research Area, at the northern edge of Jefferson County, makes up a small portion of the 13,000-acre Kittanning State Forest. It consists of continuous second-growth deciduous forests of three types -- oak dominated, mixed hardwoods, and Eastern Hemlock. The topography is typical of a high, maturely dissected plateau of the Allegheny High Plateaus. Most of the area is drained by Callen Run, a tributary to the Clarion River. The streams are bordered in many places by steep slopes. Secondary forest exists in patches of many different ages due to timber harvests. Archeological remains may be present. The Red-spotted Newt, Slimy Salamander and Timber Rattlesnake are found in the area.

Directions: From I-80 in Brookville, north on 36. Turn right onto 949 in Sigel. Turn right on Callen Run Rd.

{link:For fact sheet, click here|http://pa.audubon.org/Sites/Site20.pdf}

Ornithological Summary

This site is part of a large area of continuous second-growth forest and has been the subject of long-term baseline studies on bird populations in a typical hardwood forest. The research is conducted by the DCNR Bureau of Forestry and Clarion University with support from the National Gas Fuel Corporation. A total of 176 bird species have been inventoried, with up to 60 breeding. Characteristic breeding species include Eastern Screech-Owl (5+ pairs), Whip-poor-will (1+ pair), Yellow-billed Cuckoo (4+ pairs), Black-billed Cuckoo (2+ pairs), Ruby-throated Hummingbird (6+ pairs), and a variety of warblers.

Conservation Issues

Mineral rights are owned by the National Gas Fuels Corporation, which has proposed an underground gas storage facility that would necessitate clear cutting of an estimated 12% of the forest in the research area. In order to understand the potential effects of such logging and to design construction to minimize impacts, the company has supported long-term research on breeding bird populations in different-age stands at the site. Natural pests (e/g Elm Spamworm) and recreational overuse have been identified as potential threats. The state forest as a whole is managed for multiple uses, including conservation.