the crow
鴰 centers on a specific bird: the crow. The meaning is narrow and refers to this particular bird.
鴰 combines 舌 (tongue) and 鳥 (bird). The exact historical development is uncertain, but it likely represents a bird associated with the tongue or sound, possibly the crow.
A bird 鳥 with a prominent tongue 舌: picture a crow cawing loudly, its tongue visible as it calls.
For カツ, imagine a crow eating a cutlet (カツ): the crow caws as it pecks at the crispy カツ.