ACKNOWLEDGMENTS

We thank the US Fish and Wildlife Service and the USDA Forest Service for providing funding, access and logistical support for this study.  W. Abreu, G. Benitez, M. Lopez and M. Toledo generously assisted with data collection.  W. Arendt, F. Nuñez-Garcia, and J. Wunderle provided comments that improved earlier versions of this manuscript.  We also are grateful to Élizabeth Powles for the French translation of the abstract.

Thomas H White Jr, US Fish and Wildlife Service, Puerto Rican Parrot Recovery Program, Box 1600, Rio Grande, PR 00745 email: Thomas_White@fws.gov

G GORDON BROWN, RTI International, Research Triangle Park, NC 27709-2194

JAIME A COLLAZO, US Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, North Carolina State University, Raleigh, NC 27695

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