The willow warbler is small, but it's tough. Photo: Carlos Mompo & SEO/BirdLifeA tiny, finger-sized bird has proved that looks can be deceiving by completing a near 2,400 kilometre flight all the way from southern Spain to Sweden in just 10 days. 2,367 kilometres as the crow – or willow warbler – flies. The willow warbler isn't the only bird capable of impressive aerial feats. READ ALSO: This tiny bird can fly for ten months straight

Source: The Local August 23, 2017 10:18 UTC