Each of the long middle feathers of a cock’s tail.
More example sentences
- The length from the large fowl male's beak to the end of his sickle feather is about 24 inches.
- The tail of a Yokohama is not marked by very long sickle feathers but the well developed saddle feathers.
- These smaller sickle feathers are much like the main sickles but are shorter.
Definition of sickle feather in:
- The US English dictionary