A colony of the world's rarest gull has established itself in Napier, and Hawke's Bay Regional Council is asking everyone to be respectful of the birds.

More than 200 black-billed gulls, which are endemic to New Zealand, have set up on Pandora Spit in the Ahuriri Estuary.

HBRC's Terrestrial Ecologist Keiko Hashiba says there has been a massive decline in black-billed gulls since the 1970s, and numbers are still going down.

They are classified as nationally critical, making them rarer than the kiwi, and on the same level as kākāpō.

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"It's awesome to see the rarest gull in the world

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