release more birds, we need several more hack sites; we are now 
investigating potential sites for use in Ottawa in 1987, in 
cooperation with the Ontario Ministry of Natural Resources. 
Acknowledgements 
We thank P. Dunn, H. Blokpoel, C. Hyslop, D. McRae, L. 
Metras and I. Price for help with handling, feeding and observ¬ 
ing the falcons. Glenview Realty (Ottawa) Ltd. allowed the use 
of the Fontaine Building as a hack site, and the superintendent, 
P. Mahorage, was extremely cooperative and helpful. I. Price 
and A. Harfenist reviewed earlier versions of this manuscript 
and made valuable improvements. 
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