Udyr is one of my favorite jungles as the combination Tiger stance and bear stance makes him a force to be reckoned with both early and late game. Most builds I see are based around his Phoenix stance but the build I play is more of a fast paced chase down and high damage build.

Early in the game you should stay focused to power clearing starting off blue and working your way down to ready ignoring the large wraith ( if your timing is right you will jungle your way back up to blue then take the wraith. By that time blue should be back up.) Start off with your tiger stance taking points alternating between tiger and bear. Do not take any points in Phoenix as you want to focus on getting you attack speed and your stun. While going into ganks run in with your bear and remember you can always close the gap with flash.

focus of weaving in and out of team fights picking off weaker champs and stunning damage dealers. Also while taking camps late game look for stranglers in off lanes. They will become easy farm for you to finish off you build with.