a bad photo, but if zoomed the 8 or so petals & lobed stem leaves are visible
Hundreds of canvasback in lake. Interesting because we saw a similarly large group of canvasbacks at site last year, and I can't remember seeing this species in such numbers at nearby locations, even wildlife refuges. There must be something about this lake, even with it being surrounded by roads and houses, that is attractive to this species.
A few of these cruising next to the confluence of creeks at this beautiful spot. One repeatedly landed on my head. Try as I might to take a 'selfie' of this phenomenon(somewhat hampered by my dog), I was not able to do better than the one shot of an insect on it's approach.