"Naked neck." An oddity. This is a mutation that arose on a farm in Clamart in 1992 on the farm of M Piere Delambre. He noticed three ducklings in a brood of colverts (mallards) which lacked feathers on their necks and were only partially feathered on their head and abdominal areas, with no scales on their feet and atrophied large wing feathers. The male reaches around 1.2 kg, the female 1.1 kg, with eggs at around 50-60 g with a greenish shell. They are said to be a delicate breed.
Why would you bother?