Duck known for its soft down (5)
I believe the answer is:
eider
(Other definitions for eider that I've seen before include "Duck noted for down" , "Reed I make into a duck" , "Large sea duck" , "Duck known for down" , "Down-producing duck" .)
I believe the answer is:
eider
(Other definitions for eider that I've seen before include "Duck noted for down" , "Reed I make into a duck" , "Large sea duck" , "Duck known for down" , "Down-producing duck" .)