| Wing Character | Male | Female |
| Adult | Immature | Immature | Adult |
| Tertials | Entirely white or, in sub-adults (yearlings), tips mottled with white; pronounced curvature; acutely pointed | Dark brown to near black; usually without edging, but with some light tips; tips are rather sharp; usually frayed and often notched; slightly curved | Dark brown with light edges and tips; slightly curved; bluntly pointed |
| Greater tertial coverts | Broadly rounded, entirely white; black mottled on sub- adults | Narrow toward tips, which may be somewhat ragged, with a trace to a band of light edging | Broadly rounded, dark brown, broad arc of pale reddish brown edging |
| Greater secondary coverts | Black with white bases; tips of more distal often white | Dark brown, usually with only traces of light brown edging | Dark brown, many white-tipped; rest tipped with pale reddish brown |
| Middle and lesser coverts | Entirely white on adults; white with some black mottling along edges on sub- adults | Narrow toward tips, dark brown with a variable amount of light brown edging; edging usually more obvious on females but sexes intergrade | Broadly rounded, dark brown, heavy pale reddish brown edging |
| Rarely one or more white feathers | |
