The eagle owl nests on the isolated rocky crags of Monfragüe, a similar habitat to the desolate ruins of ancient Babylon, where the prophet Isaiah predicted it would also make its home. ​ — Isaiah 13: 21.
Monfragües pesitsevad kassikakud ligipääsmatutel kaljurüngastel. See elupaik sarnaneb muistse Babüloonia mahajäetud varemetega, mis prohvet Jesaja sõnade kohaselt pidi saama kassikakkude elupaigaks.