From Discworld MUD Wiki
Duck feathers are feathers from a duck(!), used for Granny Lipintense's Layer of Lard.
Ways to acquire a feather:
- Chase the ducks at the Dinky pond.
- Walk along Fountain Road or around the palace grounds in Bes Pelargic. There should be a duck and a number of ducklings. If you don't feel like devouring the ducklings, you can kill them and the duck and get their feathers.
- Buy a pet duck from Mrs Puddlesocks. Feathers can be plucked from them, to an extent.
- Buy a dead duck from Little Agatea or the butcher shop on God's Collar. Pluck it.