My understanding is that birds are about as intelligent as mammals.
Funny I know some people who grew up with chickens who think they are nasty, aggressive and disagreeable. Like little dragons.
Depends how they’re raised… impressionable creatures. Though IME some roosters especially are just plumb mean.
A mean rooster has a surprisingly high terror-to-size ratio, and can easily draw blood with its spurs. And they carry grudges, and they’ll stalk you.
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