Alfred Newton, 1911 Encyclopædia Britannica, Volume 20… (1911)
“ Few birds lay eggs so beautiful or so rich in colouring: their white or pale ground is spotted, blotched or marbled with almost every shade of purple, orange and red—passing from the most delicate lilac, buff and peach-blossom, through violet, chestnut and crimson, to a nearly absolute black. The fierceness with which ospreys defend their eggs and young, in addition to the dangerous situation not infrequently chosen for the eyry, make the task of robbing the nests difficult. The term “osprey,” applied to the nuptial plumes of the egrets in the feather trade, is derived from the French esprit ”
