CHAP. 44.—THE MELANCORYPHUS, THE ERITHACUS, AND THE PHŒNICURUS.
The change is different that takes place in the ficedula,[3006] for this bird changes its shape as well as its colour. “Ficedula” is the name by which it is called in autumn, but not after that period; for then it is called “melancoryphus.”[3007] In the same manner, too, the erithacus[3008] of the winter is the “phœnicurus” of the summer. The hoopoe also, according to the poet Æschylus, changes its form; it is a bird that feeds upon filth[3009] of all kinds, and is remarkable for its twisted top-knot, which it can contract or elevate at pleasure along the top of the head.