Jess (falconry) anklet worn by the bird, which is itself formed of another rectangular strip of leather, bound together at the ends by a grommet (usually of brass), prevented from slipping through the grommet by the knobbed end. Often, another slit is placed near the thin end of the jess cut about one inch long and running lengthwise, through which a special type of swivel is fitted, preventing the whole arrangement from twisting or tangling about itself or the bird when a leash is threaded through the other end. Their intent is more to prevent the risk of the bird deciding to
Creance Creance A creance is a long light cord used to tether a flying hawk or falcon during training in falconry. They are used both when the bird is young, and when the bird has been taken out of the aviary for a moult or other reasons. 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