London is notoriously difficult for housing, even for its little critters. Spontaneous City: Hoxton is a new sculptural habitat on Hoxton Street designed by London Fieldworks made of cute little bird boxes to help out our little winged friends. The artwork aims to be both aesthetically pleasing and useful for local wildlife. You can sponsor a box for £30, which will get you a limited-edition print, or for £150 you get a limited-edition inhabitable sculpture designed by London Fieldworks that you can put in your garden. They're trying to raise £3,000 to build it in time for nesting season, so dig deep.
Find out more at peeruk.org.