Moussier's Redstart is distributed from Morocco to Tunisia. See the distribution map at Birdlife International. It is found in open country with bushes often on mountain slopes and in coastal open forest and woodland. It feeds mainly on insects especially ants and is often seen perched in the open. It is not shy.

Jean Moussier was a surgeon in the army of Napoleon and an amateur naturalist.

The song is a series of scratchy warbles.