Pidgey evolves at level 18.
level 16 if it likes you
pidgey evolves on level 18 or at least thets wut my book says
well you have to try some what and yeah its not too hard if you have tunnes of cash buy some ultra ball and that should work i bought like 300 or so and i got done with like 154 left but i tried to get them at low lvls so that i just train them. some of the sevie islands have pedgey at a high lvl of 49-50 so lvl them up 2 times that fills three spots its easy just get your Pokemon when you know they want to evolve but make sure that if you do get them its not going to cost you much more then 12 ultras or its not worth it. i got mine comeplete you need a fire red to get syther and some other guys so if you have a friend make a trad efor some of yours he cant get on his game make sure if he gets you one of his Pokemon you can get on your game its a female (red symbol) it helps. JUST MAKE SURE YOU HAVE TUNNES OF CASH AND DON'T BE SCARED TO TRAIN THE ONES YOU GOT BECAUSE YOU NEVER KNOW SOME TIMES.(if questions contact me at smurfitt_7@hotmail.com)