Lisa Ware/Smithsonian’s National Zoo

The baby animal cup continues to runneth over at the Smithsonian’s National Zoo’s Conservation and Research Center in Front Royal, Va., as they announced today the July 16 birth of a female tufted deer fawn – the fourth species to give birth at the Zoo within the last week. Zookeepers have already started referring to this summer’s explosion of births as a “baby boom” of endangered species.

Tufted deer are named, as you might have guessed, after the little tuft of hair on their forehead, and are listed as near threatened by the International Union for Conservation of Nature. They only grow to be about 16-20 inches in height, the size of a medium-sized dog. Unfortunately like the other new Zoo babies, the fawn will not be on display to the public.