Spearow

While Spearow has good Attack and Speed, it is really set back by the fact that it has an extremely shallow movepool to work with. Its Normal / Flying typing doesn't help it either, as it is both weak to Stealth Rock and has a neutrality to the common Fighting-type attacks. Taillow mostly outclasses Spearow with its high Speed and access to Guts. However, Spearow has the makings of a good scout thanks to base 70 Speed and access to U-turn, while base 60 Attack means hits from Spearow are going to hurt. It also has access to Pursuit, meaning it can be a great trapper. Overall, given the right conditions, Spearow can work great on your team.