Well officially since April 1st/2010 black bear spring season is now open in British Columbia. I suspect May will bring the most bears out but there still should be the odd black bear roaming about now. Good luck to everyone going black bear hunting this spring.
Before you go out hunting for spring bears this year make sure your rifle or bow is sighted in and you are very comfortable with making accurate shots. Do not shoot beyond what your comfortable shooting distance is and if you are unsure of the distance please use a rangefinder.
Be aware that black bears are very tough animals and you must make your shot count. Check out these shot placement charts so you know where to place your shot: http://www.huntingtipsandtricks.com/a/Bear_Anatomy_and_Shot_Placement_Guide
Happy hunting and be safe this spring bear hunting season.