London vs Vienna vs Bird's

   I have three white chess openings and I quite like all of them, but I have heard that it is a good idea to only play one opening and get really good at it. I can't decide which though could y'all give me some help?

London:

Vienna:

Bird's:

I personally like the London system the best. 

You can master only one opening when you are an advanced player. Until then, learn playing chess! There is no better way to do it than to learn different kinds of positions.

I read in a chess book and I have no idea which one but they mentioned and I have heard it on commentary during chess matches that having around two solid openings are important. There isn't a specific number. 

London.

I love the Vienna, and it's a good choice, but you'll need some lines against Black responses other than 1...e5. Actually you can play 2.Nc3 against most of them, but you'd need to have a good idea of the follow-up.

Yes chu, that's way too much of a spread. Of those three you have to play the London - there are so many cool variations - Barry Attack, Jobava Attack, Tarzan Attack to name a few. You can also opt for the Mason opening or Sarratt Attack since they're close to the London. Morphy has played the Mason (with d4 and f4 you sort of have a hybrid with the Bird).

You can then keep the Bird as a gimmick opening, it's fun to alternate occassionally (in the spirit of 'Neurobics').

that is one trap that if black declined the vienna gambit in a stupid way and this position actually happens at intermediate level play and lower. 

The Vienna Gambit has some brilliant traps in it, but it's also a solid opening that usually leads to an interesting game.

The London’s absolutely the best out of the three from the beginner-moderately intermediate stages, and the Vienna’s better at levels above that. The Bird’s Opening is absolutely terrible in my opinion, and really isn’t viable at any level of play.

I play vienna game myself. It is 100% sound, even if objectivly, not offering as many winning chances for white as king's knight openings. It is however suprisingly venomus for such a seemingly passive move. If black is cought off guard, a knock out blow is likely.

I am highly sceptical about Bird's opening. Sure, I wish I ever became half as good a player as  Henry Bird was but still - with 1. f4 You don't develop any piece, but expose Your King. Your central control is a bit weaker, then after 1.e4 or 1.d4. And Black get's very nice choice about how the game will proceed - he can make things sharp with 1...e5, or keep them quiet with 1...d5 followed by c4, and g6. Probably it is still good enough for a sound opening though.

Since i am not a 1.d4 player, I can't give any advice about London system. It has an opinion of being an extremally universal system, and extremally boring one. White can play it against pretty much everything, but gets no advantage whatsever, leading to long and drawish games.