Coffee, the duck, prefers the company of chickens, rather than other ducks at the farm
But try telling her that.
The 18-month-old Indian Runner is so sure she is a chicken that attempts by staff at Gorse Hill City Farm, where she lives, to integrate her with other ducks have been abandoned.
Hilary Marshall, deputy manager at the farm in Anstey Lane, Leicester, said: "From day one, she fought with the cockerels and ate with the chickens. She will only go to bed with the chickens.
"She doesn't roost and she doesn't cluck, but she prefers to be with the chickens.
"When she arrived, we tried to put her with the ducks on the pond, but she was not happy and kept escaping.
"She wasn't fighting with the other ducks she just wouldn't stay with them, so now we just let her do what she wants."
You will not catch Coffee clucking away or perched on a roosting pole in the shed she calls her home.
But by day she is never far away from the chickens as they strut around the farmyard and at night she is happier to bed down with a dozen chickens than the ducks, who sleep just a matter of feet away.
Hilary said she put Coffee's confusion down to her upbringing.
"It's the fact that she grew up with two chickens," she said. "She's set in her ways.
"We could train her to be with the other ducks, but that would mean her being unhappy and we see no reason to do that."
Rachel and David Carmichael, from Knighton, Leicester, visited the farm yesterday with grandchildren Conor and Charlie Dash.
Conor, eight, said: "I've never heard of anything so silly before."
Charlie, seven, added: "It's a bit unusual, but I think it's funny. "