585, I'm fairly certain
episode 586 season twelve
The Episode Number in which Ash's Staravia evolves into Staraptor is Episode 586.
yes, in dp118
I found it on YouTube. Staravia evolves when Ash's Staravia is battling Paul's Honchkrow.
Ash's Staravia has already evolved into a Staraptor. It's one of the powerhouses of his team with moves like Aerial Ace, Brave Bird, and Close Combat.
Ash's Snivy didn't evolve yet.
Yes, Buizel will evolve into Floatzel, Chimchar will evolve into monferno, Staravia will evolve into starviraptor, and grotle will evolve into tortera.
episode 1337
Ash's doesn't have a dewott. He has an Oshwott, and it has yet to evolve.
345
Episode 87
Ash's hoot hoot evolves at episode 183