Welcome Home, Duck/The Lost Letter L

S2 E13: Frog, excited about Duck's return from vacation, makes a "Welcome Home" banner to hang over Duck's nest. But the dock connecting Frog's log to Duck's nest has broken, so Frog has to find another way across. When Duck accidentally breaks the L off Frog's lamp, he decides not to tell Frog. He learns that everyone makes mistakes and admitting them sooner rather than later can make a big difference.