A New Calf Has Arrived in Brooklyn Brooklyn's bovine population has grown by one: a calf was born at the Prospect Park Zoo, officials announced Monday. The calf, a male who has not yet been named, was born earlier this month and is the offspring of a milking cow named Tetley; he is the first calf ever born at the zoo, officials said. Tetley is a relative newcomer to the zoo who replaced Aggie, who died last year. The calf weighed 84 pounds at birth and is growing quickly. He can be seen in the zoo's barn area along with geese, goats, sheep and a turkey.