Thirteen Special: The City Concealed: North Brother Island Bird Sanctuary

Interesting Web-only video from PBS/Channel 13 highlighting North Brother Island, an abandoned island in New York City's East River formerly used as a hospital whose famous patients include Typhoid Mary. Today, it's a protected heron habitat regulary monitored by the Audubon Society. Check it out at http://watch.thirteen.org/video/video/1174206896