it evolve on level twenty two in emerald
Taillow evolves at level 22.
Train Taillow to level 22
Taillow evolves at Level 22.
i think at level 32
at level 36
Taillow cannot learn Brave Bird. To teach Brave Bird you need to breed Taillow.
at level 22.
level 22
Level 23. 
At level 22 it evolves into Swellow.
tailow evolves on level 22 to swellow which if people think he can evolve he cant so stop trying ya dingbats
level 22