Two penguin chicks were born in the Mumbai-based Veermata Jijabai Bhosale Udyan, popularly known as the Byculla Zoo, since May this year. The chick`s sex determination is yet to be done, a release from the zoo authorities said. Eight penguins - three males and five females - were brought to the Byculla zoo from Coex Aquarium at Seoul in South Korea in 2016, and one of the birds later died.