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Cannon-netting
Cannon-netting is a method of catching large numbers of animals, often birds, usually to band them, or otherwise tag them, as well as acquiring biometric data (measurements), in order to find out about their movements, migration routes, survival rates and metabolism. It is often used where large numbers of birds, especially waders, terns and gulls aggregate on beaches at high tide, or in places (which may be baited) where waterfowl or cockatoos feed. Cannon-netting may be used as a capture-for-culling method for perceived pest species such as cockatoos. Mammals such as deer and macropods may also be cannon-netted.
==Methodology==
Cannon-nets are nets pulled rapidly by explosively-driven projectiles to cover a pre-determined area of ground and presumptively capture any birds (or other target animals) present before they have time to escape. An alternative is the use of rocket nets, the only significant difference being the method by which the projected nets are pulled over the catching area. In the case of cannon-netting the projectiles that are attached to the net are fired simultaneously from smooth-bore cannons by electrically detonated cartridges. A full-sized cannon-net may utilise four or more cannons to pull the net over the target birds. Smaller nets with fewer cannons may also be used.
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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