Birdhouse Skateboards is a skateboard company formed by ex-Powell Peralta pros Tony Hawk and Per Welinder in 1992.
Birdhouse is Tony Hawk's company, and he has made sure that his skateboards are good quality. Birdhouse also has its Black 6 technology - this is a 6th thicker ply in the skateboard deck's construction that is supposed to add pop and help with flicks. Tony Hawk has assembled a pretty impressive skateboarding team, with himself, Shaun White and plenty more.
Birdhouse is part of Blitz, which also distribute Flip, Baker and Hook-Ups. These are good brands too - nothing really fancy or anything, just good quality 7-ply skateboard decks.