The first lighthouse on Rocher aux Oiseaux was built in 1871. It was a wooden tower with a total height of 15 metres. Today's lighthouse was built in 1967. It is an hexagonal reinforced concrete tower topped by an octagonal lantern compartment. It was automated during the 1980s and it is still in operation.
The lighthouse on Rocher aux Oiseaux is in a key location: it signals the northern limits of the shallow waters surrounding Les Îles and it marks the presence of a dangerous rock formation in the middle of the Gulf of St. Lawrence.