𐰚𐰚𐰝

Kāšġarī glosses käkük with Arabic al-zummac, describing it as a bird whose bones were used in magical practices and charms. The exact identity of Old Arabic zummac is not entirely certain, but modern Arabic references identify زُمَّج / زُمَّاج as a bird of prey, in particular a falcon-like raptor; one identification is the Eurasian hobby, Falco subbuteo. For this reason, käkük is often listed as an obscure name of a falcon-like bird of prey.

For related words, compare with Azerbaijani kəklik, kəkil, Kazakh kekilik, Turkish keklik, etc.