The creance itself is thin, designed to be of as little inconvenience to the bird as possible. It's threaded through the swivel and tied with a falconer's knot. The creance typically extends to around 25 metres (82 feet), at which point the bird should be ready to fly free (without the use of the creance).
Use of a portable tower and remote-controlled launcher to improve physical conditioning in a rehabilitating wild mallard (Anas platyrhynchos).(Clinical Reports)(Clinical report)
Dec 01, 2010; Abstract: Prerelease reconditioning improves the chance of survival of rehabilitating raptors. Reconditioning may also help to...