Plaine des Chicots – Plaine d'Affouches Important Bird Area is a 3688 ha tract of land on the island of Réunion, a French territory in the western Indian Ocean.
The IBA comprises a sloping plain extending northwards and downwards from the northern rim of the Mafate caldera, at an elevation of 2277 m on the summit of Roche Ecrite, towards Saint-Denis, the coastal capital of the island territory.
The higher part of the site is dominated by native alpine shrubland communities, from 1600 m to 1500 m by endemic Acacia heterophylla forest, and then native mixed mountain forest down to about 1000 m above sea level.
Although the site is now a nature reserve, in the past it was stocked with Javan rusa deer for hunting.
There is a popular walking track from Saint-Denis to Roche Ecrite across the Plaine des Chicots.