Possible Clues:

• Yellow feline, but without the heart of a lion?
• Coward is cast ready to tremble about first sign of conflict
• It's a bit childish that Stacey is written all over card for nervy puss
• Coward from York originally, caught in Tadcaster dancing topless
• Vacant sty pens worried pet chicken
• *Cowardly type
• *One who's easily frightened
• Get out boxes ready with cold battered chicken
• One easily frightened in case – initially Dick Tracy, surprisingly
• The Cowardly Lion, literally