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Red-necked Grebe (Podiceps grisegena holbollii) winter plumage adult swimming in harbour Choshi, Chiba Prefecture, Japan February Stock Photo - Alamy
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Red-necked Grebe (Podiceps grisegena) -> Great Crested Grebe (Podiceps grisegena) - BirdID's Bird Guide - Nord University - Birdid
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