 |
 |
| NUMERIC CODE |
ALPHA CODE |
ALPHA TRANSLATION |
|
| 0 | U | UNKNOWN | A bird that cannot be placed in any classes below . Except in cases where data were not recorded or have been lost during the nesting season, ONLY BIRDS BANDED AFTER THE BREEDING SEASON AND BEFORE JANUARY 1 CAN BE CORRECTLY CODED "U". |
| 4 | L | LOCAL | A young bird incapable of sustained flight. After a young bird achieves sustained flight it becomes an "HY" until December 31. |
| 2 | HY | HATCHING YEAR | A bird capable of sustained flight and known to have hatched during the calendar year in which it was banded. Example: Banded 1997 - Hatched 1997. |
| 1 | AHY | AFTER HATCHING YEAR | A bird known to have hatched before the calendar year of banding; year of hatch otherwise unknown. Example: Banded 1997 - Hatched before January 1, 1997. Birds that would have been coded "U" on December 31 "graduate" to class "AHY" on January 1. |
| 5 | SY | SECOND YEAR | A bird known to have hatched in the calendar year preceding the year of banding and in its second calendar year of life. Example: Banded 1997 - Hatched 1996. |
| 6 | ASY | AFTER SECOND YEAR | A bird known to have hatched earlier than the calendar year preceeding the year of banding; year of hatch otherwise unknown. Example: Banded 1997 - Hatched 1995 or earlier. |
| 7 | TY | THIRD YEAR | A bird known to have hatched in the calendar year two years prior to the year of banding, now in its third calendar year of life. Example: Banded 1997 - Hatched 1995. |
| 8 | ATY | AFTER THIRD YEAR | A bird known to have hatched prior to two years prior to the year of banding, now in at least its fourth calendar year of life. Example: Banded 1997 - Hatched 1994 or earlier. |
