| Wing Character | Adult | Immature |
| Greater coverts | Entirely white and broadly rounded at their tips | White but slightly mottled near their tips which are pointed |
| Tertials | Dark olive color; bluntly rounded at their tips | Dark olive color, but usually slightly pointed and frayed at their tips |
| Lesser coverts | Broadly rounded olive and usually with narrow white edging | Usually taper to a point and are without edging |