We where walking on the levee well after sundown, when we heard a cry that sounded somewhat like a monkey. We looked in the trees, but could not see who was crying. Then we saw a bird jump from branch to branch. Finally a Copper’s Hawk settled on a branch where we had a better view, and I was able to get photos of it through the branches and leaves. It jumped to another branch where it was mostly hidden, but then a much larger bird, flapped it’s wings closer to the Cooper’s Hawk; but it remained hidden behind branches and leaves. The Cooper’s Hawk flew back to another branch where I was able to get another photo of it before it took off into the bosque. A Great Horned Owl (possibly Virginia) flew out from behind the branches and leaves into the bosque a few moments later. I presume the owl was after the Cooper’s Hawk’s chicks and the Cooper’s Hawk was trying to distract the owl with it’s crying. Great horned owls are three to four times larger than Cooper’s Hawks, and could easily make a meal of an adult Cooper’s Hawk, which is probably why the Copper’s Hawk was not attacking the owl.