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Perhaps to warn of impending danger, such as a nearby predator or an intruder. Geese are excellent sentinels in this regard.

Sentinel chickens are used to help researchers monitor certain viruses in different communities. They place the chickens in several places in a county and test their blood regularly for certain antibodies. This helps public health researchers to determine what types of viruses are present in the environment at that point in time.

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14y ago

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