The lowland gorillas at the Bronx Zoo tend to congregate indoors during the winter rather than roam around outside in their forest habitat. But, after sunset, their sculptural counterparts illuminate the zoo’s grounds, as do fanciful renditions of lions, giraffes, zebras, rhinos, elephants, ring-tailed lemurs, cranes, dolphins, and sea turtles. The Holiday Lights festival—which is back after a twelve-year hiatus—also features ice-carving demonstrations, costumed characters, and train rides. Its final days are Jan. 3-5.