The purple heron belongs to the Family Ardeidae. That means that is a heron. It is a large bird, 80-90 cm tall, with a 120-150 cm wingspan, but slender for its size, weighing only 0.5-1.3 kg
I saw it twice at Bishan Park, both times it was at a field. Then, I saw it fly then perch on the canal railing once. It was then when saw its long wingspan. After all, its wingspan is about my height.
A picture taken of it at Bishan Park