Akkadian

akkû - a kind of owl (CAD A₁ 275, AHw. 29)

Scarcely attested in lexical lists (v. Salonen 1973 112).

PS
*kVw- - kind of bird (SED II No. 123)
Scarcely attested, problematic. The Anlaut of Akk. form could be explained as an example of ˀa-prefixation but the gemination of k is disturbing.