Alfred Edmund Brehm,
Cassell's book of birds; vol. 3
“ When arrived before a thicket of these in full bloom, he poises or suspends himself on wing for the space of two or three seconds so steadily that his wings become invisible or only like a mist, and you can plainly distinguish the pupil of his eye looking round with great quickness and circumspection; the glossy golden green of his tail and the fire of his throat dazzling in the sun form altogether a most beautiful appearance. When he alights, which he frequently does, he always prefers the dry twigs of a tree or bush, where he dresses and arranges his plumage with great dexterity. ”
