Delete, UDF RB OUN Ts BeUstyli Eek LeN 35 
affiliate at the Laboriatory of Ornithology. Peregrine falcons are being 
bred at Cornell for eventual release in the eastern United States, where 
they now have ceased to breed in the wild. 
“WE ARE INTERESTED in monitoring the rate of falloff of DDT in 
the environment,” Peakall said. ““When Cade is ready to release his birds, 
we want to be sure they won’t pick up any dirty prey.” 
Despite the ban in the United States, birds can pick up DDT in Central 
and South America during their yearly migrations. 
In yet another phase of his study, Peakall is trying to determine the 
effects of other organochlorines, as well as other environment pollutants, 
on avian reproduction. He has already determined that PCB’s (polychlori- 
nated biphenyls) cause embryonic deaths in the second generation of some 
experimental birds. 
‘FRIENDS OF BIG PINE CREEK’ SCHEDULE 
FIRST ANNUAL BIRD WALK IN MID-MAY 
Two organizations in Indiana and in Illinois—both dedicated to pre- 
venting Big Pine Creek in west central Indiana from becoming an- 
other Corps of Engineers dam project—are inviting IAS members and 
friends to the First Annual Big Pine Creek Bird Walk, to be held 
in Warren County, Indiana, May 18 and 19. 
The event on both days will be divided into two simultaneous 
sections. One group will walk the trails associated with Fall Creek 
Gorge, a magnificent and geologically unusual area recently purchased 
by The Nature Conservancy, and now set aside as a nature preserve. 
The other group, all those either bringing canoes or renting them 
there, will take advantage of the unique opportunity for bird-watching 
which canoeing Big Pine Creek affords. Birds of Special interest which 
have been recorded along Big Pine Creek in recent years include the 
Wood Duck, Turkey Vulture, Kingfisher, Rough-winged Swallow, 
Carolina Chickadee, Parula Warbler and Louisiana Waterthrush. 
On the evening of May 18, a representative of the National Audubon 
Society will be on hand to place the struggle to save Big Pine Creek 
in the perspective of the national conservation picture. Both lodging 
and camping facilities are available in the area. 
Big Pine Creek is a 30-mile free flowing tributary of the Wabash 
River (about two hours from Chicago). It is threatened by a proposed 
100-foot Corps dam, pegged at about $30 million. 
The two sponsoring groups, the Committee on Big Pine Creek in 
Attica, Indiana and the Friends of Big Pine Creek (P.O. Box 2431, Sta. 
A., Champaign, Illinois 61830), were formed to fight the decision. 
Full details on the mid-May bird-walk can be secured from 
Meredith Schroeer, Route 1, Heyworth, Ill. 61745 (telephone 309-473- 
3328). She will provide maps and particulars on camping, canoeing, 
and lodgings. 
