buzzard
鵟 refers specifically to a buzzard, a type of bird of prey.
鵟 combines 狂 (wild, crazy) with 鳥 (bird), likely suggesting a wild or fierce bird, i.e., a buzzard. The exact historical development is uncertain.
A wild (狂) bird (鳥) that soars fiercely: that's a buzzard.
For キョウ, imagine a buzzard's fierce cry echoing: 'kyou!' The sharp sound cues キョウ.