Hello, The third time was the charm for me! I would say late afternoon a good time - except that I was there late afternoon on Tues. - and nothing. Keep trying when you can if still need to see! And it was the head that I finally keyed in on. Basically, it's a greater scaup look only with a dark back. I keep going back and forth on whether I missed it earlier in the day. But other birders there also and nothing. So presumably not there, but I will never know!