Batman vppon Bartholome his booke De proprietatibus rerum, newly corrected, enlarged and amended: with such additions as are requisite, vnto euery seuerall booke: taken foorth of the most approued authors, the like heretofore not translated in English. Profitable for all estates, as well for the benefite of the mind as the bodie. 1582.
Bartholomaeus, Anglicus, 13th cent., Trevisa, John, d. 1402., Batman, Stephen, d. 1584.

De Ouis Vulturis. cap. 115.

VUlturis egges be greate as Eagles egges and few, for it is harde for her to fit an brood on her owne egges. These egges be browns and speckled, with hard shells, and ••ill smell, and heauy sauour, and sometime she casteth out some of her egs, as the Eagle throweth away some of her egges, for she may not castly feede her birdes, as Isidore sayth. Of Egges, and of the manner of egges, and of their qualities and diuersitie, this shall suffice for this time.