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Rangle
In falconry, rangle is a term used for small stones which are fed to hawks to aid in digestion. These stones, which are generally slightly larger than peas, are used less often now than they were historically. See also * Gastrolith A gastrolith, also called a stomach stone or gizzard stone, is a rock held inside a gastrointestinal tract. Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth. In ... * Grit References Falconry {{Ornithology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falconry
Falconry is the hunting of wild animals in their natural state and habitat by means of a trained bird of prey. Small animals are hunted; squirrels and rabbits often fall prey to these birds. Two traditional terms are used to describe a person involved in falconry: a "falconer" flies a falcon; an "austringer" (Old French origin) keeps Eurasian goshawks and uses hawk, accipiters for hunting. In modern falconry, the red-tailed hawk (''Buteo jamaicensis''), Harris's hawk (''Parabuteo unicinctus''), and the peregrine falcon (''Falco perigrinus'') are some of the more commonly used birds of prey. The practice of hunting with a conditioned falconry bird is also called "hawking" or "gamehawking", although the words wikt:hawking, hawking and peddler, hawker have become used so much to refer to petty traveling traders, that the terms "falconer" and "falconry" now apply to most use of trained birds of prey to catch game. However, many contemporary practitioners still use these words in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastrolith
A gastrolith, also called a stomach stone or gizzard stone, is a rock held inside a gastrointestinal tract. Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth. In other species the rocks are ingested and pass through the digestive system and are frequently replaced. The grain size depends upon the size of the animal and the gastrolith's role in digestion. Other species use gastroliths as ballast.Rondeau, et aLarval Anurans Adjust Buoyancy in Response to Substrate IngestionCopeia: February 2005, Vol. 2005, No. 1, pp. 188–195. Particles ranging in size from sand to cobble have been documented. Etymology Gastrolith comes from the Ancient Greek γαστήρ (''gastēr''), meaning "stomach", and λίθος (''lithos''), meaning "stone". Occurrence Among living vertebrates, gastroliths are common among crocodiles, alligators, herbivorous birds, seals and sea lions. Domestic fowl require access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grit (supplement)
Grit is a material eaten by birds to aid in their diets and digestion. Wild birds find grit naturally while foraging, and farmers can purchase grit for their domestic fowl. There are two forms: soluble grit, which dissolves in a bird's digestive system and is often made of calcium; and insoluble grit, which remains in the gizzard and is usually composed of stone. Grit that starts off in rough or angular pieces may become rounded off as it is used in a bird's gizzard. Grit is sold in stores for use in poultry rearing. It can prevent domestic from developing an impacted crop, especially during molting season, when chickens are prone to eating their own feathers. Its use in wild waterfowl and gallinaceous birds has been the subject of many avenues of research: their status as game birds, their population densities, the potential role of grit in lead poisoning, and pesticides that grit may include. History Grit has been known to avian researchers since at least the late 1700s. The firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
