Henry Salt, A voyage to Abyssinia — Appendix 4 (1814)
“ The exterior quill is nearly half an inch shorter than the third, or longest, and for one inch from the tip its outer margin is entirely plain: but all the quills have constantly one spot more on the inner than on the outer edge of the feather. The tail is barred above with olive white and dusky, but below the white becomes of a dingy yellowish colour, and the shafts both of the tail and quills are yellow; the former deepest in colour. The two outer feathers of the tall on each side are rounded at the ends, the third nearly so, but the shaft a little prominent and sharp ”
