A lot of people, when they hear an animal crying out for help in the wild, will run in the other direction. After all, if that animal is in danger, the person could be in danger if he or she tries to help the animal. However, this man heard a crying swan and actually ended up saving the life of two swans.

He was hiking out in nature, and heard the cries of two swans from far away. He decided to go see what was going on, and he saw that two swans were tangled up in a mass of fishing wire. When they saw him coming, they actually swim towards him. It was as if they were desperate for help and thought that he was their only hope. It took a bit of effort on his part, but he was able to liberate both the swans.
One of the swans started flapping its wings right away, but the other one seemed to still be trapped by his wings and feet. The man followed the swan and saw that he was still trapped in some wire. He bravely picked up the bird and removed the wire. At the end, both these swans, happy in their rescue, swam away.
What this man did is no doubt astounding. However, if you are out in the wild and find an injured animal, it would be best to enlist the help of a local wildlife rescue rather than trying to handle the situation yourself.