Bachelor of Science, University Puerto Rico, Mayaguez, 1978. Master of Arts, Hofstra University, 1983. Doctor of Philosophy, Louisiana State University, 1989.
National Science Foundation research fellow, Water Resources Research Institute, U. P.R., Mayaguez, 1978-1979; teaching assistant biology department, Hofstra U., Hempstead, New York, 1981-1983; research assistant Wild Fish Department, Louisiana State University, Baton Rouge, 1984-1989; fish and wildlife biologist, USFWS-Caribbean Field Office, Boqueron, P.R., 1989-1990; fish and wildlife biologist, FWS-P.R. Parrot Field Office, Luquillo, P.R., 1990-1994; assistant unit leader Mississippi Cooperative F&W Research Unit, Mississippi State University, Mississippi State, since 1994. Vice president Louisiana State University chapter of The Wildlife Society, 1984-1985.
Member Society Caribbean Ornithology (board governors 1993-1994), American Ornithologists Union, Society Conservation Biology, American Museum Natural History.
Married Ana B. Arnizaut, September 24, 1988. 1 child, Isabela Beatriz.