 | pale bluish bill with dark tip circular nostrils | |
 | large falcon broad body | |
| (Photo of spread primaries needed) | 8th & 10th primary the same length | |
(Photo of light phase needed) Intermediate phase  (Photo of dark phase needed) | Light phase white head white plumage black wing tips Intermediate phase (shown) gray plumage Dark phase black head black plumage |
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