The Alpine swift (apus melba, or by a more recent classification, tachymarptis melba) is the biggest European swift. Its behavior is similar to the other swifts'. The Alpine swift spends most of its time in flight, hunting insects in the air. It nests in holes on cliffs or in caves of Southern Europe, especially on mountains (the name "Alpine swift" comes from here). It is about 20 cm long and has a wingspan of about 60 cm. It has a dark brown body with white bellie and throat, and a brown stripe separates the two white parts. The white throat is barely visible from the distance. The call is a drawn-out twittering.