An Arizona aquarium is celebrating the hatching of three endangered African penguin chicks, saying the tiny additions are genetically valuable as zoos and aquariums around the world work to ensure the species’ survival through breeding programs and conservation efforts.

Officials at OdySea Aquarium made the announcement Friday, posting video of the fuzzy birds on social media. They hatched a few weeks ago and will remain behind the scenes with their parents until they’re ready for a public appearance.

African penguins have suffered a massive population decline over the decades and are listed as endangered by the International Union for Conservation of Nature.

So any successful hatching is cause for celebration, said Jess Peranteau, director of animal care and education at the aquarium.

The breeding program established by the association aims to build up a viable genetic pool for the species.