Bird Banding Laboratory


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Band Size

Below are sizes of bands currently used in North American banding. Their approximate inside diameter and height is as follows:

Band Size Internal Diameter Height of Band Band Types Available
for order
from BBL/BBO
Comment
X 1.27-1.52 mm 1.6 mm Butt-end; Y Hummingbird bands
0A 1.98 mm 5.5 mm Butt-end; Y
0 2.11 mm 5.5 mm Butt-end; Y
1C 2.31 mm 5.5 mm Butt-end; N Discontinued in 1999.
1 2.39 mm 5.5 mm Butt-end; Y
1B 2.77 mm 5.5 mm Butt-end; Y
1P 2.84 mm 5.5 mm Butt-end; Y Snowy Plover ONLY; no other species to be banded with this size.
1A 3.18 mm 5.5 mm Butt-end; Y
1D 3.50 mm 5.0 mm Butt-end; Y
2 3.96 mm 6.7 mm Butt-end; Lock-on; Y
2A 4.2 mm 6.7 mm Butt-end; Y
3 4.78 mm 6.7 mm Butt-end; Y
3B 5.16 mm 6.7 mm Butt-end; Y
3A 5.56 mm 6.7 mm Butt-end; Y
4 6.35 mm Short - 7.0 mm; Regular - 9.5 mm; Butt-end; Lock-on; Y Short available only as butt-end.
4A 7.14 mm Short - 7.0 mm; Regular - 9.5 mm; Butt-end; Lock-on; Y Short available only as butt-end.
5 7.95 mm 9.5 mm Butt-end; Lock-on; Y
5A 8.74 mm 9.5 mm Butt-end; Y
5R Butt-end; N Special order bands at bander's expense. BBL assigns band numbers.
6 9.53 mm 9.5 mm Butt-end; Lock-on; Y
6M Butt-end; N Special order bands at bander's expense. BBL assigns band numbers.
7A 11.13 mm Short - 9.5 mm; Regular - 14 mm; Butt-end; Lock-on; Y Short available only as butt-end.
7 12.70 mm 12.7 mm Butt-end; Y
7B 13.49 mm Short - 9.5 mm; Regular - 12.7 mm; Butt-end; Lock-on; Y Short available only as butt-end.
7D 15.0 mm 12.7 mm Butt-end; Lock-on; Y
8V Y No federal band - coded color marker only
8 17.48 mm 15.8 mm Butt-end; Lock-on; Rivet; Y
8A 20.65 mm 15.8 mm Butt-end; Lock-on; Rivet; Y
9 22.23 mm 15.8 mm Butt-end; Lock-on; Rivet; Y
9A 25.39 mm 15.8 mm Rivet; Y
9C 28.58 mm 28.5 mm Butt-end; Lock-on; Rivet; Y
9V Y No federal band - coded color marker only
EX Butt-end; N Expandable
UK Butt-end; N Unknown
N N No band (for unbanded banding mortality)

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