|** Rabbi Zivotofsky is an IRTA fellow at the National
Institutes of Health, Bethesda, MD. The author wishes to acknowledge a
large debt of gratitude to Stanley Searles, Curator of Birds at the Cleveland
Metroparks Zoo, Dr. Doni Zivotofsky, DVM, Prof. Marc Shapiro, Ph.D. and
an "anonymous consultant". In addition, thanks are due to: Rabbi Moshe
Bleich, Rabbi Michael Broyde, Rabbi Reuven Halpern, Dr. Ari Y. Greenspan,
Prof. Karla Goldman, Rabbi Yehuda Kelemer, Avi Pollak, and my father, Dr.
Bernard Zivotofsky, Ph.D.