If one bird spots danger and raises vocal alarm signals, other species often flee.
The parental alarm calls in shrill tits to warn their babies to hide
Micro-video of rabbit as an intruder in a territory near tree
At times birds call to mark their territory and breed, raise alarm on scaring away the intruders.
A bird's an alarm signal is an anti-predator adaptation in response to danger as a part of their evolutionary process..
Many birds have elaborate alarm calls for warning con-specifics
Some birds are shameless eavesdroppers. They tend to listen and react to the calls of other species.
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