Jess (falconry) chase something it shouldn't, and less to keep the bird from getting away, as falconry birds are routinely (and as part of the sport) set free—the bond between bird and falconer serves as a much better leash than any leather or rope ever will; however, it is not always desirable that a bird be able to take flight at its own whim, and both on the glove and on the perch, jesses help ensure this. During hunting season (small game season for North American falconers), jesses are generally worn all season in the mews, and are often removed for the
Falconry pet or possession, although the law may allow it, is not considered to be a falconer's bird. Birds may be used for breeding or kept after their hunting days are over, but falconers believe it is preferable that young, fit birds are flown at quarry. In the United States, falconry is legal in all states except Hawaii. It is also illegal in the District of Columbia. A falconer must have a state permit to practice the sport. (Requirements for a federal permit were changed in 2008 and the program discontinued effective January 1, 2014.) Acquiring a falconry license in the