Which other colonial waterbirds might compete with Double-crested Cormorants for desirable nesting or resting islands?

Answer

Gulls, terns, and herons

Cormorants, due to their colonial nesting and roosting habits, often compete directly with other colonial waterbirds like gulls, terns, and herons for prime island locations.

Which other colonial waterbirds might compete with Double-crested Cormorants for desirable nesting or resting islands?
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