What kind of bird is this?

[Swimmer]

This morning, after many days of my wife seeing this bird when I wasn't around, it perched on my deck railing. It was around for about a half hour, that I knew of. It sat on the peak of the house, in trees ajacent to my house and deck, and on the ground. It has a grey back with interspersed white feathers. It chest is tan with interspersed medium brown feathers. Also it mate was with it and probably has been everytime my wife saw it, but didn't notice the other of the two. Both are quite large. I snapped some pictures of probably the male just after the female took off from inside the garden fence. The male is sitting on the fence post as you can see, and if you enlarge the picture it becomes quite easily seen, so I am hoping someone here knows what it is.