Crackpot theory: I believe that Talonflame is Corviknight's true predator in the Paldea region
>Ultra Moon and Sword Pokedex state that Talonflame feeds upon other bird pokemon
>Has type advantage and speed over Corviknight
>Was separated by another island away from Corviknight in Galar
>Shares every spawn with Corviknight in Paldea, including Area Zero where Tinkaton is absent
Granted, the SV pokedex does not directly reference Corviknight and Talonflame as it does with Tinkaton and Corviknight, but I think its something worth considering.