Jamieson, Fausset and Brown on Micah 1:16

16. Make thee bald, &c.--a token of deep mourning (Ezr 9:3; Job 1:20). Mourn, O land, for thy darling children.

poll--shave off thy hair.

enlarge thy baldness--Mourn grievously. The land is compared to a mother weeping for her children.

as the eagle--the bald eagle, or the dark-winged vulture. In the moulting season all eagles are comparatively bald (compare Psa 103:5).