Take a tropical adventure to the Bird Kingdom in Niagara Falls! The Bird Kingdom is the largest free-flying indoor aviary where over 300 birds call their home. The aviary is a multi-level rainforest setting housing a 40 foot waterfall, dozens of topical plants, and 80 different species of birds! The Bird Kingdom also features a smaller aviary for small birds to make their homes in as well as a nocturnal aviary! The nocturnal aviary stays dark even during the daytime hours to accommodate the nocturnal creatures.