There is a drake lesser scaup at Shotton. Found yesterday I believe and a North Wales tick for me.
It is on Cop Hole pool which is close to the road. Go over the main Flint bridge from Connahs Quay. At the first roundabout there is a pull in on the left. Don't block the gate but walk round it to view the pool.
It's with tufties but there was an earlier report of a greater scaup as well.