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
Falconry gull and pigeon population. Falconry centres or birds of prey centres house these raptors. They are responsible for many aspects of bird of prey conservation (through keeping the birds for education and breeding). Many conduct regular flying demonstrations and educational talks, and are popular with visitors worldwide. Such centres may also provide falconry courses, hawk walks, displays and other experiences with these raptors - see links at bottom of page for details. In 2010, UNESCO inscribed falconry as a living human heritage element of eleven countries, including United Arab Emirates, Belgium, Czech Republic, France, Republic of Korea, Mongolia, Morocco, Qatar,