Une poule sur un mur is a short French nursery rhyme much sung by small children in kindergarten or preschool.
About the song
The short nursery rhyme tells the story of a hen's unexciting life in the countryside.
Une poule sur un mur
Lyrics, music, free download... let's learn more about the popular song:

The lyrics in French
The original song has 1 verse.
Couplet
Une poule sur un mur
Qui picore du pain dur
Picoti, picota
Lève la queue et puis s'en va
Translation of the lyrics into English
Here is an approximative translation into English:
Verse
A chicken on a wall
Pecking at hard bread
Picoti, picota
Lifts its tail and goes away