Alfred Edmund Brehm,
Cassell's book of birds; vol. 3
“ Here, after perhaps many battles have been fought and rivals vanquished, the noble, full-dressed Black Cock takes his stand, commencing at the first dawn of day, and where game is abundant, the hill on every side repeats his humming call; he struts round the spots selected, trailing his wings, inflating his throat and neck, and puffing up the plumage of these parts and the now brilliant wattle above the eyes, raising and expanding his tail and displaying the beautifully contrasting white under tail-covers. ”
