Feather

Chickens had feathers. (TV: The Invasion) The word for 'feather' and 'truth' in Hieroglyphs was Ma' at. (PROSE: Set Piece)

The First Doctor once freed John from an octopus' grip by tickling it with a feather. (COMIC: Shark Bait)

The Eighth Doctor referred to the TARDIS as having "a few feathers ruffled." (AUDIO: Blood of the Daleks)