The purpose of this paper is to discuss the role of banding data in migratory game bird management. The procedures followed in analyzing these data and the assumptions made are also outlined. This information is desired not only to better understand and justify expensive banding programs, but also to provide guidance to those wishing to analyze banding data. This understanding is essential, not only to effectively use the resulting data, but also to make correct decisions in the field while banding. A realization of how banding data are used emphasizes the importance of many details, such as the accurate age and sex determinations in the field and the correct reporting of this information on banding schedules.

In tests of three types of bands -- extra-wide bands, lock-on bands, and regular U.S. Fish and Wildlife Service bands -- little difference was noted in the retention qualities of the three types on waterfowl. Therefore, there appeared to be no advantage in using either the extra-wide or the lock-on type of band rather than the regular band now in use by waterfowl banders on this continent. Waterfowl banded with two bands provided recovery data that were difficult to analyze but suggested that it might be worthwhile to identify banded birds with another type of mark and evaluate the retention of bands through subsequent recapture of the birds.