My cat does this as well when a bird is close by.....they think they are going native with the lingo. Unless he is taking a course on the internet while I am out, my bird is just pretending to speak beak talk.
acorn - fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base. acorn cup, cupule - cup-shaped structure of hardened bracts at the base of an acorn. oak tree, oak - a deciduous tree of the genus Quercus; has acorns and lobed leaves; great oaks grow from little acorns. fruit - the ripened reproductive body of a seed plant.
Most oaks will flower and produce fruit in the springtime in the form of an acorn, which is a nut in a cup-like structure which takes 6-18 months to mature, depending on the type of species. The âlive oakâ group has evergreen leaves and is not distinctive, but can be found in many areas throughout North America.