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Chinstrap Penguin, also known as Pygoscelis antarcticus, is a species of penguin that is easily recognizable by the thin black band that runs under their chin, giving the appearance of a strap holding their distinctive black and white colored helmet-like markings in place. These medium-sized penguins primarily inhabit the cold waters surrounding Antarctica and nearby islands, where they feed on krill, fish, and squid. They are known for their agile swimming abilities and unique vocalizations, which they use to communicate with their colony members. Chinstrap Penguins are social birds, forming large breeding colonies during the summer months where they nest in rocky areas and raise their chicks.