Birds of Aitutaki, Cook Islands

Résumé fourni par la source

The distributions of birds on the islands of Aitutaki were surveyed 3–13 Oct 2024. We describe 22 resident and migratory species across the 17 islands of the almost-atoll Aitutaki, with regionally important colonies of red-tailed tropicbirds (Phaethon rubricauda), red-footed boobies (Sula sula), and wedge-tailed shearwaters (Ardenna pacifica), as well as a population of the IUCN-vulnerable blue lorikeet (Vini peruviana) on Aitutaki’s main island. While Pacific rats (Rattus exulans) and cats (Felis catus) are present on some islands, others potentially remain rat-free. Over the last 25 years, the reef island of Motukitiu has undergone a substantial habitat transformation from introduced coconut forest to native atoll broadleaf forest, enabling the recovery of seabirds. Prevalent threats to the birds of Aitutaki include the introduction of additional rat species, spread of Pacific rat to currently rat-free islands within the almost-atoll, unsupervised tourism, and habitat modification on the small islands.

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