Black-billed gull research

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Black-billed gulls are unique and very different from the other two gull species in New Zealand. They are endemic, and are considered the most endangered gull species in the world. They have suffered declines of 78% in the last 30 years. WMIL have been monitoring breeding success and banding black-billed gull chicks from several colonies in the Upper South Island since 2009.

The banded birds have allowed us to gather previously unknown information on adult and juvenile survival, movements of birds, as well as age of first breeding and pair bonds. These data provide ground-breaking information on understanding the gulls and their use of different habitats, thereby leading towards the creation of a conservation management plan. We rely on sightings of banded birds from everywhere and anyone at any time. If you see any, please report the date, time, location as well as colour and engraved number of the band here.

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