Guano collection from London Underground bridges

Collecting pigeon guano from special built dovecotes on railway bridges is a new concept. Pigeons have become somewhat of a pest in cities everywhere and are thriving. They are commonly called flying rats. However like the rest of us, they are only trying to survive.

A temporary exhibition in London's Design Museum is called "Islands. Design Researchers in Residence" and one of the sectors is called Dovecote for London. 

In the display, the exhibitor proposes a design for dovecotes, as a home for pigeons. These could be placed on railway bridges and the guano collected from inside could be used as a fertiliser for urban farms around London. This would benefit urban agriculture. 

Many years ago, some of the Pacific Islands were famous for the export of guano. This was used for fertilizers and explosives. One of the main islands was Nauru. This has even featured on several of their stamps -

A map of the Guano Line -

The dovecotes could house many pigeons and protect them from predators and the weather. They would have perches and entrances designed for pigeons.  A model of the inside of a dovecote -

I think it is a great idea and hope it actually happens.