I like Vullaby and Mandibuzz the most, they made me like vultures a lot. Vullaby wears a skull as a diaper, and Mandibuzz wears bones as skirt like clothing. Those birds look pretty and tough.
I don't usually end up using a lot of bird Pokémon in playthroughs (Flying types I pick are usually flying dragons). That said I do really like the sleek design of Galarian Articuno, and I had a Fearow once that was a star team member of the one nuzlocke I ever attempted (Fire Red).