Anyone have any idea what is happening?

Barb Appelhans sent me these pictures of some of our young swans. You will notice in some of the lower pictures it looks like there is damage to differing parts of the body. Please help. We want to protect our beautiful swans.
Some appear to have pink-red paint on them or they are being harmed by something or someone. If anyone has any idea what is causing this please call the office and let them know. Thank you.
Ken