What function does the white underside of the white-tailed deer's tail serve?
Answer
Serving as a warning signal to other deer when alarmed.
The common name of the species is derived directly from this distinctive visual display. When a white-tailed deer perceives danger or becomes alarmed by a potential threat, it raises the underside of its tail high into the air, often described as flagging like a signal flag. This contrasting white surface is highly visible against the deer's typical darker body and surroundings. The purpose of this highly visible action is immediate communication, serving as an unmistakable warning signal to any other deer nearby, alerting them to the presence of danger so they can also flee or take defensive action.
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