Rock dove - Columba livia
My wife and I were attentively watching the red-tailed tropicbird as it swooped and soared above the waters and close to the cliffs below the lighthouse. We both saw it dip down in front of us and we both thought we saw it land on the cliff face just to our left. We scrambled to get photos. We both took dozens, along with video. I asked my wife "Did you get it?" "Yes!" she replied with excitement. After several minutes we both realized--at about the same time-- that we were looking at a white rock pigeon and that the tropicbird had not landed there at all!
At Kilauea Lighthouse National Wildlife Refuge, Kauai.