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
Falconry fairs, has probably never been higher in the past 300 years. Ornithologist Tim Gallagher, editor of the Cornell Lab of Ornithology's "Living Bird" magazine, documented his experiences with modern falconry in a 2008 book, "Falcon Fever". Making use of the natural relationship between raptors and their prey, today, falconry is used to control pest birds and animals in urban areas, landfills, commercial buildings, and airports. Falconer Dan Frankian of Hawkeye Bird and Animal Control frequently speaks on the subject to news crews while his hawks and falcons are flying over Toronto City Hall, in an effort to control the city's