Sitting Ducks is the first episode of the fifth season.
- Sir Topham Hatt
- Henry (cameo)
- James (cameo)
- Percy (cameo)
- Toby (cameo)
- Oliver (cameo)
- Elizabeth (cameo)
- Annie and Clarabel (cameo)
- Henrietta (cameo)
- Molly (cameo)
- Express coaches are too heavy to go on branch lines.
- Duck is out of character.
- Duck's driver should've known not to shunt or steal coaches.
- When Duck and Spencer were about to start the race, Gordon was on Duck's track, but when Duck and Spencer start the race, Gordon was on a different track.
- Spencer and Gordon were on Duck's branch line, but big engines can't go on branch lines.
- It isn't explained why Thomas was on Duck's branch line.