ACKNOWLEDGEMENTS 



This research was supported by the Bureau of Land Management under contract to 

 the Denver Wildlife Research Center. Jean Duke and C. R. Smith participated in several 

 flights. We thank James Kushland and Sonny Bass for assistance with flights over the 

 Everglades National Park. Tom Fritts, Steve Leatherwood, James Powell, Tom O'Shea, 

 Galen Rathbun, and Susan Shane made constructive comments on earlier versions of the 

 manuscript. Howard Campbell identified the crocodile. Linda Dunn contributed 

 technical assistance and Joan Randell typed the manuscript. 



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