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Do tuatara eat fairy prion eggs and chicks?

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Yes, it is accurate to state that tuatara may prey on fairy prion eggs and chicks.1

Tuatara often utilize the burrows of these nesting seabirds for protection and food. While the tuatara primarily feed on a diverse array of arthropods and smaller lizards that are supported by the birds' excreta, they are also known to consume the eggs and young of the fairy prion.1