Swift; Vencejo Común

Thanks for using my picture to illustrate this Karen. Since the article specifically mentions Alpine Swifts, Apus Melba, I include 2 links to my pictures of this species which although absent from much of Europe is a common visitor to Spain. It can be easily separated from other species of Swifts by its large size and clearly defined white belly.
http://www.projectnoah.org/spottings/303...
http://www.projectnoah.org/spottings/308...

Fun fact! Swifts spend an incredible 6 months at a time airborne – eating and even sleeping on the wing! Researchers from the Swiss Ornithological Institute attached data loggers to three alpine swifts and captured data that reveals that the birds remained airborne for 200 days while migrating to and wintering in Africa. http://bit.ly/1fjDMCn

https://www.facebook.com/photo.php?fbid=...