Flock of Nothern gannet..

Birds can stay in the water for extended periods of time due to the waterproof nature of their feathers. Birds disperse a water-impermeable fluid secreted by their sebaceous glands across their bodies using their beaks or heads. Because of their large down feathers, strong subcutaneous fat layer, and densely overlapping feathers, these birds can live in colder temperatures. During the non-breeding season, the reduced blood flow in the birds' foot webbing aids in keeping their bodies warm..

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