Current Ornithology

Volume 12: 1. Testosterone and Polygyny in Birds; L.D. Beletsky, et al. 2. Using Migration Counts to Monitor Landbird Populations: Review and Evaluation of Current Status; E.H. Dunn, D.J.T. Hussell. 3. Ptilochronology: A Review and Prospectus; T.C. Grubb Jr. 4. Individual Voice Discrimination in Birds; M.M. Lambrechts, A.A. Dhondt. 5. The Evolution of Bird Coloration and Plumage Elaboration: A Review of Hypothesis; U.M. Savalli. 6. Hatching Asynchrony and the Onset of Incubation in Birds Revisited: When Is the Critical Period? S.H. Stoleson, S.R. Beissinger. Index.