Humboldt penguins hatch at Chester Zoo
Eleven Humboldt penguins have started to hatch at Chester Zoo.
The penguins are an endangered South American species, which naturally live on the coastal areas of Peru and Chile.
Each pair of penguins lays two eggs and will incubate them for 40 days up to hatching. Both parents are involved in incubation and rearing the young.
Keeper Karen Neech said: "It will be around eight weeks before the juveniles leave the nests, so we are keeping a close eye on their development."
She added: "So far we have had 10 chicks hatch so things are incredibly busy for us and the adult penguins.
"There is so much more food required with all these extra mouths to feed.
"We provide the fish and the parents turn this into a high-protein soup to feed to the chicks, so it really is a combined effort."
The Cheshire zoo has a colony of more than 50 Humboldt penguins.
The chicks will be named with a British tree theme, in recognition of the Year of the Forest campaign set up by the United Nations to raise awareness of conservation issues.
The first to hatch was given the name Acorn and the last to hatch will be given the name Oak.