Jess (falconry) the bird, but the width is proportional to leg-length. Traditional jesses are made from a single length of leather, and slits are placed strategically along the jess to allow it to be looped through itself and around the ankle of the bird so that it fits comfortably but securely about and just above what would be the bird's ankle. With Aylmeri jesses, as created by Major Guy Aylmeri, the end of the jess is instead looped through itself repeatedly to form a "button", or knob at one end. The thin, pliable end of the jess is then threaded through an
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