Acknowledgments

Much of the information in this account has come from work of researchers cited throughout. An earlier manuscript draft was substantially improved with advice and criticisms supplied by Theunis Piersma, R. I. G. Morrison, and the BNA editorial staff. My own work with knots through 25 years has been fostered by Manomet Center for Conservation Sciences, and by a number of foundations listed in Harrington 1996 . Information provided by cooperators of the International Shorebird Surveys has been used extensively. I have used measure-ments that Linda E. Leddy and I made of specimens under care of curators at the Museum of Comparative Zoology, American Museum of Natural Sciences, Academy of Natural Sciences of Philadelphia, Carnegie Museum of Natural History, National Museum of Natural History, Field Museum of Natural History, Los Angeles County Museum of Natural History, University of South Florida, Southwestern College Museum of Natural History, and El Museo Centro de Biologico Investigaciones (Zulia, Venezuela). Biometrics from knots captured during banding expeditions in Argentina, Brazil, and the United States has come through the work of too many volunteers to name here. Robert Gill has kindly provided information on knot distribution in Alaska. Logistic and financial support has been provided by Manomet, the Argentina Park Service, Centro de Estudos de Micraoes de Aves in Brazil, the U.S. Fish and Wildlife Service, and the Canadian Wildlife Service. I am deeply grateful for the support and encouragement I have received from all of these people and organizations, and from others unnamed.