Two birds play on branches in the aviary of Hong Kong Park in south China's Hong Kong, Jan. 8, 2013. The aviary, covering an area of 3,000 square meters, is located on a valley in the south of the park. (Xinhua/Li Peng)
A bird is seen in the aviary of Hong Kong Park in south China's Hong Kong, Jan. 8, 2013. The aviary, covering an area of 3,000 square meters, is located on a valley in the south of the park. (Xinhua/Li Peng)
Two birds take food in the aviary of Hong Kong Park in south China's Hong Kong, Jan. 8, 2013. The aviary, covering an area of 3,000 square meters, is located on a valley in the south of the park. (Xinhua/Li Peng)
Two birds play on branches in the aviary of Hong Kong Park in south China's Hong Kong, Jan. 8, 2013. The aviary, covering an area of 3,000 square meters, is located on a valley in the south of the park. (Xinhua/Li Peng)
Two birds land on a balustrade in the aviary of Hong Kong Park in south China's Hong Kong, Jan. 8, 2013. The aviary, covering an area of 3,000 square meters, is located on a valley in the south of the park. (Xinhua/Li Peng)