Caudal vertebrae more than thirteen, without a pygostyle, but with about twelve pairs of rectrices.
The outer two rectrices with terminal white blotches of variable extent on the inner webs.
The tertiaries and rectrices are tipped with pale rufous grey.
Tail pale clove-brown, the inner webs of the rectrices lemon-yellow, the outer edged with olive-yellow.
The rectrices were partly ensheathed and the feather count extensively downy.
Wings and tail dull black, edged with ashy or olive-gray; two wing bands white; the outer three rectrices largely white.
The tail is long and strongly graduated; all the rectrices are obliquely pointed at their tips.
Quill feathers of the wing (remiges) and tail (rectrices); the former are attached to the hand and forearm.
Many specimens show yellow remiges and rectrices, and are perhaps hybrids with the species auratus.
The quill feathers include two groups, the remiges or wing quills, and the rectrices or tail quills.