In areas like North Carolina's sounds during winter, where are large communal roosts of Double-crested Cormorants often observed?

Answer

On sandbars within the sounds

Researchers frequently observe large wintering flocks of Double-crested Cormorants congregating densely on sandbars located within the sounds.

In areas like North Carolina's sounds during winter, where are large communal roosts of Double-crested Cormorants often observed?
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