Crows and ravens do not get along. But according to new research, it's not the larger ravens that are the aggressors. As it turns out, crows - the smaller of the two - are instigating 97 percent of the altercations.

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Crows and ravens do not get along. But according to new research, it's not the larger ravens that are the aggressors. As it turns out, crows - the smaller of the two - are instigating 97 percent of the altercations.