The male of the species is characteristic in having a broad white band over the otherwise black
primaries. In addition the males acquire a striking 2nd primary feather during the breeding season. These
pennant feathers grow to greater lengths in successive years, up to twice the body length. They are dropped or broken off quickly upon completion of breeding. With the distal (9th) and proximal (1st - 3rd) primaries being longest, the wings of male birds are distinctly angular. ==Habits==