or to scare away predators or people that approach their nests.

Others suggest an altruistic motive: Jays imitate hawks to warn other birds that a hawk has been spotted and it’s time to take cover.

The no motive theory contends that blue jays simply imitate sounds they hear, hawk calls included.

Ascribing motives to account for a mimic’s particular sound is tricky business.  If blue jays imitate hawks for a reason, their secret is safe with me.

Rob Hanson

Puzzle: Why do Blue Jays Imitate Hawks?