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Bal-chatri
Bal-chatri (/bɑːl tʃʌθri/) are traps designed to catch birds of prey (raptors). The trap essentially consists of a cage baited inside with a conspicuously visible live rodent or small bird, with a series of monofilament nooses attached to the surface to snare the legs of a free-flying raptor that attempts to take the bait. The name is derived from the Hindi word used by trappers in India. Modified bal-chatri traps are also used for catching shrikes.
==History==
The bal-chatri originated in East India as a trap developed and used by falconers to catch suitable birds of prey to train for use in hunting. It consisted of a small, conical, cane cage, containing live lure birds to attract raptors, and covered with attached horsehair nooses to entangle their feet. The term bal-chatri has been mistranslated as “boy’s umbrella”, or “small umbrella”, after their shape but is correctly translated to "hair umbrella" and refers to the nooses made of horse-hair anchored to the umbrella-like frame. Bal-chatris continue to be used by falconers, but are also used in ornithological research projects which require the capture of raptors for banding and other procedures, such as blood sampling.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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