Alright, heres a Walkthrough on how to catch the Legendary Bird Trio, Easily!

The Legendary trio.

The trio is located in the following places. Moltres, mt Ember, Zapdos, Power plant, Articuno, Seafoam islands. Now, for catching them you have to bring 19 Ulta balls. I repeat, because this is the key, bring 19 ultra balls and some revives as well. Enjoy! Also PLEASE answer my question, it's called restart?