Martyn Kenefick is a freelance ornithologist and tour leader for birding groups in Trinidad. Robin Restall was executive director, Phelps Ornithological Collection, Caracas, Venezuela, and is now a director of the Phelps Foundation. He is author of Munias and Mannikins and coauthor of Birds of Northern South America, both published by Yale University Press. Floyd Hayes is professor of biology, Pacific Union College, and editor-in-chief of the Journal of Caribbean Ornithology.