It takes a pair of Swallows up to 1,200 journeys to build a nest.

Swallows belong to the family Hirundininae which also includes martins. There are 84 recognised species worldwide. They are not even distantly related to swifts. Our familiar swallow, Hirundo rustica, is generally known as the barn swallow. It breeds throughout the Northern Hemisphere including every European country except Iceland. The barn swallow is the world’s most widespread...