-up shot of a Great Cormorant (Phalacrocorax carbo) perched on a dead tree branch against a clear blue sky. The bird exhibits gular fluttering, rapidly vibrating its throat and neck (making a 'grololo' sound or similar), a key thermoregulatory behavior to cool down in the heat. This unique behavior highlights the bird's adaptation and is excellent for documentaries focusing on avian behavior, ecology, and thermoregulation in wildlife.