We have a swan that has lived in our lake for months. He visits our backyard daily and my kids have named him Sammy. Today my five year old came to tell me that something was wrong with his leg. I noticed that his left leg is flipped backwards resting on his back. He will not leave the water even for bread. I feel so bad but Don't know how to help or if he's in pain. Please give me any advice to help Sammy the Swan. We live in broward county florida if there are any known wildlife organizations.