Local river users noticed the big and beautiful bird was unable to fly, and organized a rescue mission.
Bird was rescued and treated for serious symptoms caused by eating fishing tackle.
Presentation highlights efforts to care for swans suffering from lead poisoning.
Beaks and boats recently came to the aid of a young bird made gravely ill by toxic ammunition or fishing tackle.
Trumpeter swans can be found all winter in open water, including a popular spot in Hudson.