A group of endangered frogs at Jersey Zoo has been returned to their native home of Montserrat after a world first attempt at saving the species.
27 captive-bred mountain chicken frogs will return to the Caribbean island after a team attempted environmental manipulation techniques to protect them against a deadly fungus.
The microscopic pathogen Chytrid is believed to have wiped out more than 500 species worldwide and has driven the chicken frogs to the brink of extinction. The frogs have not been recorded in Montserrat for more than two years.
The Mountain Chicken Frog Recovery Programme, which includes Durrell Wildlife Conservation Trust, developed a semi-wild enclosure which included artificially heated areas to kill the fungus. The 'safe haven' also featured solar powered ponds which regulate their own temperature.
Dr Mike Hudson, who has led the project, says the implications for conservation going forward could be huge.
The frogs are now being closely monitored and tested for signs of the fungus and experts are tracking the pathogen to see how it responds to the semi-controlled environment.