9-3-2016
We saw it on our arrival in Mai Po. It was in the tree in the middle of the pond; then flied to other tree on our right side. Then about our leaving Mai Po after three hours boardwalk bird watching, the owl was in the same side in different tree. Not sure if it was the same one since you said there were two. But we were so excited because owls are one of our dream birds. We saw it in Hong Kong.
Eric