I contacted the Southwick Zoo and got a prompt reply from Betsey Brewer, who is the executive director of EARTH Ltd there. She said that the Trumpeter Swan reintroduction program was originally in Iowa and has since been established in Oregon. The Southwick Zoo has been sending their young swans there. When asked about escapes, she said that two or three years ago, two young birds flew off before they could be relocated. She said that they had not been banded. I hope that clears up some questions.
