And maybe smokes a little too...
Police arrested Michel Rouyer after they discovered 12 cannabis plants and about 5kg (11lb) of the drug during a visit to his home after a theft.
Mr Rouyer said there was "no better worming substance" for ducks and that his flock was in excellent health.
A police spokesman said it was the first time they had heard such a claim.
Mr Rouyer, who lives in the village of Gripperie-Saint-Symphorien on France's Atlantic coast, did also admit to smoking some of the marijuana.
[Thanks Tim, who enjoyed the serene look on the duck's face!]
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