| Adult | |
|  | black bill with bluish base dark brown irises yellow cere white mask | 
|  | narrow dark bands on tail wide subterminal band wings nearly reach tip of tail | 
|  | dark gray remiges on underside of wing | 
|  | 3 emarginated primaries | 
| Juvenile | |
|  | dark malar mark extending to neck | 
| (photo of juvie tail needed) | wings nearly reach tip of tail | 
|  | pale underside of wing with barring | 
| (Photo of juvie primaries needed) | 3 emarginated primaries | 
| 3 Phases | |
|  | Light phase bib light underparts dark grayish brown upperparts white or tawny underwing coverts with dark gray remiges | 
|  | Intermediate phase all rufous underparts or brown bib with rufous belly & legs white coverts on underside of tail underwing coverts can be white, tawny or rufous | 
|  | Dark phase dark brown head dark throat dark grayish black body |