Paparazzi

This is the roof of the building opposite our flat, with what appears to be some kind of pigeon trap on it.

If you look closely, there are at least 2 pigeons inside and one on top about to get caught - highly efficient.

Still haven't understood how it works, do they get lured in by the first pigeon or is there food inside? Actually, this is the sort of thing that we used to dream of building with my brother...

http://youtu.be/AOPMlIIg_38
(Charlie xcx-Boom Clap)