Jarrod Santora, professor at the college of Staten Island, is an ornithologist, a person who studies birds. In this WILD TV video segment, Jarrod explains the banding system. The band is an aluminum ring with a unique nine-digit number on it. No two birds have the same numbers on their bands, so ornithologists can easily identify the bird. Jarrod uses all of his senses to study birds. When birds are netted and caught, Jarrod weighs them and records their age and other important information. Data or information is collected to determine how and where birds live. For more about the study of birds, see the segment "Jarrod Studies Birds."