This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 鶪 is uncertain. It visually contains 鳥 (bird) on the right and 狊 on the left, but the original semantic and phonetic roles of these components are unclear.
The kanji contains 鳥 (bird) on the right, but its meaning is unclear. Treat it as an unknown bird-related character.
For ケキ, imagine a bird making a sharp 'keki' sound: keki -> ケキ. The bird component 鳥 ties the sound to the kanji's shape.