Participant Photo: Unknown waterfowl

I need help identifying these birds. This photo is the best I could do given that the sun had not quite risen (the time stamp is wrong, camera was still set on DST) and there was a mist on the water. I do not know if the brownish one was the same species as the black and white ones or just a mallard hanging around with the other two. I tried looking with binoculars and couldn’t find a match in Merlin Bird ID.