| Wing Character | Male | Female |
| Adult | Immature | Immature | Adult |
| Tertials | Three or four most distal mostly white with narrow black margins on outer web; others black; all are acutely pointed | All are dark gray with pointed tips that are usually frayed and faded | All are dark gray and bluntly pointed |
| Greater tertial coverts | Most are white with smoothly rounded tips | All are dark gray; taper toward tips that are usually somewhat frayed | All dark gray; tips smoothly rounded |
| Greater secondary coverts | Cover the dark bases of the secondaries on normally spread wing |
| Proximal 2/3 is white to tips | Proximal 2/3 is white on outer webs with traces of black or gray at tips | Proximal 2/3 is white with black bands at tips |
| Middle and lesser secondary coverts | Do not completely cover dark bases of greater coverts on normally spread wing |
| Entirely white over secondaries | Gray; but more distal coverts often form a pale area | Gray; slightly darker than on males; never have a pale area |
| Notch-length | 99% > 260 mm. | 97% > 254 mm. | 97% < 254 mm. | 99% < 260 mm. |
