As suggested by 11A, other unclued lights were all anagrams of ducks: 12A drake; 16A teal; 28A redhead; 31A smew; 39A widgeon; 40A poker; 10D scoter; 20D shoveller.
First prize Tom Shaw, Clevedon, Somerset
Runners-up Sebastian Robinson, Glasgow, John Pugh, Ely, Cardiff
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