If you phone the shelter (780-922-3024) they will tell you to get the bird under control. You can do this as easily as putting a cardboard box over the bird and placing a rock on top of the box. Injured birds are usually easily subdued but you must be cautious. Many times if you quickly approach the bird it will flip on it's back and put it's feet up to defend itself. In this case, you can throw a coat or blanket over it and pick up the whole thing and put it in a box. Raptors feet are designed so once they grab onto something it's difficult for them to release.
A cardboard box is feather friendly. Any rigid container that a bird struggles against can break feathers. A broken bone will heal in 3 weeks, a broken feather can take up to 2 years to be replaced. Make sure you poke some holes in the box so the bird can breathe and put some newspaper or a towel in the bottom.
Once the bird is contained we will come and get it, if you can come part way or all the way that's even better.