On new-band sheets, the full nine-digit band number is entered on the first line of the sheet, and successive lines should record only the last three digits.
A band string is a sequence of 100 bands. Note that the first band of a string ends in 01, not 00; band 00 is the last band of the string, and its hundreds digit will be one higher than the rest of the bands in that string.
Best practice is never to mix band strings on the same sheet. However, sometimes banders will start a new string on the same sheet, and they must re-enter the full prefix in that case. Also, sometimes bands from another series will show up on the wrong sheet, and those must be written out in full.
For unbanded data sheets, this field is blank.
For recapture sheets, every band number must be written
out in full. If a bird is captured already banded, but
escapes before the existing band number can be recorded,
this field will be blank or partially blank. Blanks are
interpreted as unknown digits and will be entered as
question marks, “
Hummingbird bands do not have room for nine digits.
Instead, they have a single letter (such as T or X)
followed by five digits. On the banding sheet, the first
three columns of the band number are blank, followed by
the letter and the actual band number, e.g.,
···T12345” where “
represents a blank.
Some MAWS sheets are for “local” birds, meaning that they are not expected to leave the area. These birds are banded with special four-digit bands. When coding these band numbers, right-justify the numbers in the last four spaces on the sheet.