The eastern population migrates up to 4830 miles (7,778 km) to overwintering sites in Mexico.[49] Other insects show migratory behavior but not nearly for as long distances. The exception would be the desert locust, Schistocerca gregaria: it was reported once in 1950 that individual swarms were seen migrating from the Arabian peninsula over 5,000 km (3,105 miles) to the west coast of Africa in seven weeks.[50]