An endangered griffon vulture chick that was raised by two male vultures has been released into the wild in Sardinia.
The chick was part of a breeding program in Artis Amsterdam Royal Zoo, where an abandoned egg was given to the two male vultures who had been observed by keepers to have been pairing for several years and routinely making nests and attempting to breed together.
The two male birds cared for the egg and it was the first successful hatching of the breed in the zoo in five years.