Really,... I was a member of the model air plane club in Lethbridge, we had a field to fly on the west side, [University] that wind surely made it difficult at times. Going skying to Fernie or Kimberly on the Crowsnest Highway I have fond memories seeing the HUGE nest in town, not sure anymore which town. At times it was above 0 degree in the hills, going back to Lethbridge it would still be in the deep freeze!

I agree with BN. It is an adult Sharp-shinned Hawk. Although my reasoning slightly differs: the "hooded" appearance of this bird is obvious from this angle (how the dark head continues over the nape of the neck). This is a terrific way to tell the similar Cooper's and Sharp-shinned apart (but only as adults!). A Cooper's has a "capped" look (dark crown of the head and a lighter gray nape of the neck). The shape is also indicative of a Sharp-shinned (squat appearance with a small head and fat chest, lack of a neck, large eyes and small bill). The auriculars (cheeks) actually aren't a reliable way to tell Sharp-shinned from Cooper's, but it is a semi-useful way to tell male from female in both Sharp-shinned and Cooper's. I don't like to use it unless it is really obvious. Kind of iffy. In summary, this is a Sharp-shinned Hawk. It is hunting birds.

Yes, looks like a Ruby-crowned Kinglet to me.

Konrad, thanks for the ID on the first Bird. It sure sure does look like him. Carolb, here is another pic, cropped of the secord. I think it may be a mocking bird, too. It does have the long tail. Thanks.