November 1, 1959
1 min read
The Language of Crows
One group of American eastern crows responds to recorded distress calls of French jackdaws, but another group does not. The more cosmopolitan life of the former may account for this difference
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November 1, 1959
1 min read
The Language of Crows
One group of American eastern crows responds to recorded distress calls of French jackdaws, but another group does not. The more cosmopolitan life of the former may account for this difference