Largest penguin colony

According to Official Guinness Records,

The largest penguin colony in the world is on Zavodovski Island in the South Sandwich Islands. Approximately two million chinstrap penguins (Pygoscelis antarctica) breed on the slopes of the island which is an active volcano.Chinstraps get their name from a thin curved line of black feathers which run under their chin. They are also considered the most numerous penguins in the world with a population of around 12 million, mainly found in the Antarctic.

For a complete list of 2001 records, please visit 2001 Guinness Records in Antarctica.

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Other Antarctica records that might interest you:

• First person to walk to both poles
• Thickest ice
• First flight across the Antarctic by single engine aircraft
• Most southerly bird
• Least explored continent
• Most southerly marathon
• Largest desert (cold)
• Most sparsely populated continent
• Highest Seasonal Population Difference