A group of Blue Jays had seen this hawk first for when I had gone outdoors and was going to my vehicle I heard a terrific series of loud squawks coming from around our back yard area. Being drawn to the noise,
I saw the Jays dispersing while at the same time I saw a hawk scrambling upwards among the branches of a clump of Alders. It was making its way to the upper branches while staying within them.Sharp-shinned or Cooper's? I am disappointed that I did not get a picture of the Blue Jays in the same frame with the hawk, for the hawk seemed much larger than the jays. In David Sibley's, The Sibley Guide to Birds (2000) p. 112, he gives the length of a Cooper's being that of 16.5" and that of a Sharp-shinned as 11". The length of a Blue Jay is also given as 11" (p.351), so based upon my observation that this hawk appeared to be larger than the jays around it, I would be inclined to think that maybe it could have been a Cooper's, but that is just speculation based upon my quick glimpse of its size in comparison to the Blue Jays.