New reports indicated that immature swarms of Desert Locust are forming in northern Burkina Faso. New swarms continue to form in southern Mauritania, northern Senegal, Mali and Niger. Many of the swarms are highly mobile and are flying, especially in areas where vegetation is drying out. Some of these are quite large and dense. Several swarms reached the Cape Verde islands, northwestern Mauritania, southern Western Sahara and northern Mali during the past ten days. Conditions remain favourable in parts of the Sahel to allow a second generation of breeding.