The Black-footed penguin chicks, named Twix and Twirl, were born at Banham Zoo in March.

The species is native to the south-western coast of Africa and is under severe threat, with fewer than 20,000 believed to remain in the wild.

They arrived in March and opened their eyes in April (Image: ZSEA)

"It’s brilliant to see both chicks doing well, two at once certainly keeps them busy," Sophie Imhof, team leader of birds at Banham Zoo, said.

"Every hatch really matters for this species, as they are a critically endangered species with species numbers dropping 90pc in the last........

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