x2. If they can make the whole thing a coop, that would be appropriate for 8 birds.
The right modification depends on the climate.
In some warm climates, the best fix would be to take out that wall between the two sections, and it would be a very well ventilated coop with one end a bit more sheltered.
In some cold climates, making the whole thing into a coop would require making most of the sides out of solid material (but still including a decent amount of ventilation.)