Jamieson, Fausset and Brown on Isaiah 34:11

11. cormorant--The Hebrew is rendered, in Psa 102:6, "pelican," which is a seafowl, and cannot be meant here: some waterfowl (katta, according to Burckhardt) that tenants desert places is intended.

bittern--rather, "the hedgehog," or "porcupine" [Gesenius] (Is 14:23).

owl--from its being enumerated among water birds in Le 11:17; De 14:16. Maurer thinks rather the heron or crane is meant; from a Hebrew root, "to blow," as it utters a sound like the blowing of a horn (Re 18:2).

confusion--devastation.

line ... stones--metaphor from an architect with line and plummet-stone (see on Is 18:2; Is 28:17); God will render to it the exact measure of justice without mercy (Jas 2:13; 2Ki 21:13; La 2:8; Am 7:7, 8).

emptiness--desolation. Edom is now a waste of "stones."