Where are all the dead pigeons?

It may not seem like one of life’s great mysteries, but a quick internet search reveals that people from across the world – London to Hong Kong, Cape Town to Buenos Aires – are asking this same question: for all the pigeons out there in our cities, where are all the dead ones? Alas they’re not pondering the presence of pigeon heaven, but rather, where are all the bodies?

Pigeons are as ubiquitous in the world’s cities as bad traffic, buskers, and late-night takeaways. London alone is estimated to contain more than a million pigeons, inhabiting the many parks and gardens that crisscross its 1,000 square miles. Given these vast numbers – and the fact that an urban pigeon seldom lives for more than three or four years – it’s a wonder why they are not strewn across city streets.