| Wing Character | Male | Female |
| Adult | Immature | Immature | Adult |
| Middle and lesser coverts | White over white secondaries; more distal often with dark centers | Black with gray-white tips over secondaries | Black with white tips to mostly white over secondaries |
| Greater secondary coverts | White on distal half; sometimes with black tipping; bases form a broad black band | White, sometimes with a trace of black at tips; black bases show as a narrow band | White with a wide black band across tips; black bases show as a narrow band |
| Notch- length | 97% > 222 mm. | 96% > 217 mm. | 94% < 217 mm. | 96% < 222 mm. |
| Greater terital coverts | Black with rounded tips and not frayed | Black, somewhat pointed; often both frayed and faded at tips | Black; tips rounded and often showing traces of gray |
| Tertials | Shiny black; not frayed or faded | Dull black; tips usually frayed and faded to gray | Shiny black; not frayed or faded |
