14 Dec 2015
The image is located at https://www.rspb.org.uk/Images/swallow_tcm9-18469.jpg?width=530&crop=(44,262,948,770) . If linking to it is problematic please let me know and I will remove the link. I hope the free RSPB publicity is appreciated!
I have seen swallows in Devon in early December at Bolt Head, near Salcombe. Most make the hazardous journey to South Africa each September and return in April to these shores. Some arrive earlier, but most arrive by mid April, with swifts a few weeks later.
See https://www.rspb.org.uk/discoverandenjoynature/discoverandlearn/birdguide/name/s/swallow/ .