The birds are back! How rat-free Lehua Island is transforming into a seabird paradise once again

What happens when you remove predatory rats from an island where native birds are constantly threatened, their eggs are eaten, and the entire ecosystem is at risk?

You don’t have to wonder! Island Conservation was involved in a project on Lehua Island, Hawaii to do exactly that. In 2021 the island was declared rat free, and many seabirds are breeding once again. These “connector” species are crucial to bringing important nutrients to the land and the surrounding ocean, thereby kick-starting a full and natural recovery of the island.

A new dawn for Lehua’s birds and the biodiversity that relies on their flourishing.

Sometimes the birds need to be enticed back to the island using social attraction methods. This is when scientists use artificial means to encourage birds to nest and breed on their once-favored territory. On Lehua, teams are using tern decoys, mirror boxes and sound systems on two sites to welcome the ʻewaʻewa or Sooty Tern, the pākalakala or Gray-backed Tern, and the hinaokū or Blue-gray Noddy.

The project is led by Hawaii’s Department of Land and Natural Resources (DLNR) through its Division of Forestry and Wildlife as well as the Kauaʻi Endangered Seabird Recovery Project (KESRP), and we will be keeping a close eye on how these endangered birds flourish!

Want to learn more about social attraction? Island Conservation has been involved with many similar successful projects. Read about our work on Desecheo Island and Pajaro Uno Island.

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