kim_harding ✅Anyone noticed that the swallows gathering? It is really mind-blowing when you realise what they are about to do...
Correction: The image turns out to be the migration of Barn Swallows (Hirundo rustica) and not Swifts (Apus apus) as I had been led to believe. The source is the Eurasian African Bird Migration Atlas https://migrationatlas.org/node/1843
Bird Migration Atlas
This online Migration Atlas covers the huge geographical area represented by two continents, encompassing the flyways between Eurasia and Africa. Movements in time and space of 300 bird species are mapped and analysed drawing on data gathered by European Ringing Schemes over more than a century and collated by the EURING databank.
Spaansolijfje