Dan Kitwood produced a beautiful set documenting the process of recording migrating sand martins, house martins, swallows and other birds at the reserve by the British Trust for Ornithology Photograph: Dan Kitwood/Getty Images
Here a man holds a dead child among the bodies of people activists say were killed by nerve gas in the Ghouta region of the Duma neighbourhood of Damascus, Syria Photograph: Bassam Khabieh/Reuters
I saw a tweet by @bypip that read: 'Don't usually do street photography, but made an exception: Two guys. One suit. 5am in Stoke. Big one.' And this accompanied it. So far it has been retweeted 1,600 times. Check out Pip's website
Photograph: Pip/SONSLTD