Alfred Edmund Brehm,
From North Pole to Equator: Studies of Wild Life and Scenes in Many Lands
(1896)
“ Aimlessly they wander hither and thither, sniff at every blade of grass on the way, but scarcely crop any, lift their heads expectantly and joyously, let them droop again in disappointed sadness, bleat, and bleat again. The restlessness increases almost to frenzy, the bleating becomes a perfect bellowing. ”
