But compared to banding?
You can use SEAMLESS bands. They have top be placed on before the ducking grows too large, and bands wear off with age and environmental conditions. You would have to use Plasticine-Filled Leg Bands (P. Blums, J. B. Davis, S. E. Stephens, A. Mednis and D. M. Richardson. 1999. Evaluation of a Plasticine-Filled Leg Band for Day-Old Ducklings. J. Wildl. Manage. 63:656-663) for a band placed on that age that would be retained as adult. Environmental conditions with the placticine-filled bands affect retention until the bird grows large enough.
Compare that with a simple, permanent clip of the toe.
Clint