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18/03/2015 Invasive species News

World’s most important eggs about to hatch in the Galapagos Islands

Thirty mangrove finch eggs transported to the Charles Darwin Research Station for the second season of captive rearing...

Photograph of Pete Haskell

Pete Haskell

Former Communications Officer at Galapagos Conservation Trust

Widlife, Mangrove Finch Eggs © Sue Maturin

Eggs of the critically endangered mangrove finch

Press Release

A batch of mangrove finch eggs are about to hatch at the Charles Darwin Research Station on the island of Santa Cruz in the Galapagos Islands, thanks to funding from the UK’s Galapagos Conservation Trust.

The mangrove finch is one of the rarest birds in the world and was recently the subject of the BBC documentary series, Natural World. With a population of just 80, a team of experts aim to prevent the mangrove finch from becoming extinct by collecting eggs from wild nests and raising them in captivity.

Projects, Mangrove Finch Project Team © Sue Maturin

The Mangrove Finch Project Team transporting eggs to the Charles Darwin Research Station

Thirty eggs were collected last month from mangrove finch nests in Playa Tortuga Negra on the island of Isabela before being transported 130km by boat to the artificial incubation and captive rearing facility at the research station. The first eggs have already hatched and the chicks are being cared for around the clock. Last year, the Mangrove Finch Project team successfully reared and released 15 fledglings back into the wild.

Projects, Mangrove Finch Feeding © Liza Diaz Lalova, CDF

Feeding a newly hatched mangrove finch chick

The ambitious Mangrove Finch Project was initiated in 2014 with the aim of restoring mangrove finch populations.

Ian Dunn, Chief Executive of the Galapagos Conservation Trust, said “with such a small population and continuing pressure from introduced species, the current efforts by the Mangrove Finch Project team are the best short-term solution for the species. We are thrilled to have been able to facilitate this season’s fieldwork thanks to the generosity of our supporters but are also keenly aware that still more needs to be done.”

Only 12 breeding pairs were identified in the wild this year in an area the size of 45 football pitches. This makes them the rarest of what are collectively termed “Darwin’s finches”, as well as one of the rarest and most range-restricted birds in the world. Research shows that the introduced parasitic fly, Philornis downsi, is one of the principal causes of high nestling mortality, with up to 95% of nestlings dying during the first months of the breeding season in natural conditions.

The Mangrove Finch Project is a bi-institutional project carried out by the Charles Darwin Foundation and Galapagos National Park Directorate in collaboration with San Diego Zoo Global and Durrell Wildlife Conservation Trust. The project is supported by the Galapagos Conservation Trust, The Mohamed bin Zayed Species Conservation Fund, Durrell Wildlife Conservation Trust, The Leona M and Harry B Helmsley Charitable Trust, Galapagos Conservancy, and the British Embassy in Ecuador.

For more information on the Mangrove Finch Project and to help support future efforts to save this species, please visit

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