First you have to beat the elite four, then you have to go to island one and talk to Celio, he'll send you on a quest to get an item for him called Ruby, it's in Mt.Ember, then you have to get another one called saphire and give it to celio, after that you'll be able to trade pokemon from emerald, ruby and saphire.
Then you trade yourself a taillow.
Chat with our AI personalities
Taillow is a 3rd Generation Pokemon or a Hoenn region exclusive Pokemon meaning that Firered version which takes place in the Kanto region cannot capture it. All 3rd Generation Pokemon must be traded to Firered from either Ruby, Sapphire or Emerald.
Taillow isn't in Leaf Green, just emerald Sapphire and ruby
breed a swellow and ditto
I know Taillow evolves to Swellow but after that Swellow won't be able to evolve.Answer Swellow is one of the few Pokemon who only has one evoltion. (from Taillow to Swellow)
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.