Unfezant at least has better attack and speed than Pidgeot and can have interesting niches having access to hypnosis, taunt and super luck, making it somehow unique (not very good but at least unique).
I remember using all of them in play throughs. Thetwo bad stand outs are Noctowl and Unfezet. Unfezent lacks any real flying type moves, and hitting outside of return/ u-turn. Swellow gets guts to make up for underwhelming movepool, plus boomburst for lols. Staraptor is staraptor and Talonflame is talonflame. Pidgeot while still bad at least has brave bird, and got slight boosts. Noctowl also gets access to hear wave as a move tutor move, and decent sp def. unfezent for worst lame bird for me.