hello, is strange, because when i catch zapdos, it come with a great ball. this info is not in the main site, so if someone can bring it...

Let me guess, you threw a Great Ball when fighting it in the Power Plant, and you caught it.
It's not that special. I caught mine in a Poke Ball just fine.

ehh you dont undestand (my faul). the zapdos that i catch COME WITH a great ball (as held item). i check if is possible that zapdos containd that item when you catch it. i am not talking about wich pokeball i use for to catch it....

That means you probably gave it one...? Zapdos does not and have never automatically come holding Great Ball...

sorry, but that zapdos come with that great ball when i catch it. i check it after to catch it in the pc and come with the great ball.
is impossible that i attach the great ball before... and that time i was playing it (not my brother).

Maybe it's just a glitch or something bug.
Zapdos never contain such Great ball on the first place.

It can have Brightpowder but not a Great Ball.

Here, check it: Zapdos

When I caught my zapdos it was holding an ultra ball I'm sure because I had to switch to get to hold a quick claw so maybe there is some 0.01% chance it will have an ultra ball

Thats very interesting, as I have never heard of that happening before.

There is some video of it on YouTube I think