Considering this is a project that's still being worked on that just slipped down the list I figure bumping this should be fine. (I asked NixHex too and he's still going to do it for what it's worth)
Anyway, submitting Spearow for Mid.
Availability: Found very early on at Route 46 and is relatively common there.
Stats: Has good Attack and Speed for ingame purposes. Its defenses aren't great but hopefully Spearow won't be taking many hits.
Moves: Quite a shallow movepool, though Peck is quite nice early on to take on Sprout Tower and Bugsy. It has to deal with using Swift (found in Union Cave) and Peck for a while early-midgame barring getting Return on a Sunday in Goldenrod, but once it gets Fly after Chuck it can attack nicely. Drill Peck comes a bit late at level 37 but is amazing once received. Sadly, it lacks anything to hit Rock- and Steel-types, as Steel Wing comes well after the Elite Four in Kanto.
Power: Strong enough to power through teams early, though it loses a bit of luster against the stronger teams later in the game. It's a good go-to even later on for Bug Catchers and Black Belts, however, so it's always somewhat useful.
Type: Not really that great. Normal/Flying leaves it basically useless against Rock-types (and the rare Steel) and invites Ice- and Electric-types to take it out. It does have a good advantage over common Grass- and Bug-types, however, and once it gets Fly it works well on Fighting-types too.
Match-ups: Somewhat of a mixed bag.
Falkner: Basically neutral, though being immune to Mud-Slap is nice.
Bugsy: Spearow runs through this with Peck.
Whitney: It's okay against Clefairy, but using it against Miltank is just asking to be swept by Rollout.
Morty: Being immune to Shadow Ball is awesome, though having to rely on Peck (or maybe Pursuit if Fearow is to level 25) isn't. Still, with some Awakenings it's not a bad choice.
Chuck: Too bad you don't have Fly here. Not really spectacular despite being a Flying-type, but it can at least contribute.
Jasmine: Don't even bother here.
Pryce: Not as bad as against Jasmine but Fearow still loses to Icy Wind.
Clair: Hates being paralyzed against Dragonair, and two of the three have a move to easily take Fearow down. Facing Kingdra is risky but neutral attacks is all most teams can do to it anyway so it's not a bad choice for that.
Will: Keep it away from Jynx and Slowbro. Does great against Exeggutor, and okay against Xatu.
Koga: Tears apart Venomoth and Ariados. Mostly neutral against the rest but it can do fine.
Bruno: Onix completely walls it, but Drill Peck is super effective on everything else. Just watch out for Machamp's Rock Slide.
Karen: Definitely good against Vileplume and should be able to tear through Murkrow's weak defenses just fine. Neutral against the rest.
Lance: Aerodactyl destroys it, while the two lower-level Dragonite can hit it super effectively. It's not really great against the others either.
Lt. Surge: Just don't.
Sabrina: Fearow should outspeed Mr. Mime and can take it out quite quickly. The other two depend on Fearow's level. Basically, if it outspeeds Espeon and Alakazam it has the upper hand, otherwise it's at a serious disadvantage.
Misty: Not really great here, though it's okay for Quagsire at least.
Erika: Fearow tears through this team with Drill Peck.
Janine: Ariados and Venomoth don't stand a chance, and Fearow's almost certainly going to beat Crobat due to the level difference here. Weezing is a bit dangerous, however.
Brock: Even with Steel Wing this isn't worth trying.
Blaine: Magcargo destroys it, everything else is just average.
Blue: Good for Exeggutor and can probably take on Pidgeot too. Arcanine and Gyarados are an even matchup, while Rhydon walls it. Alakazam is the same as with Sabrina: It depends on Fearow's Speed at the time.
Red: Doesn't really like Pikachu or Blastoise but takes out Venusaur. Otherwise average, though it can at least deal solid damage to Snorlax and force it to Rest.
I think I may have overdone this a little but I got on a roll here... I'll have more soon.
C&C work: 34 done, 2 partly done, finished 4th gen moveset errors