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There could also be some sightings of rare visitors such as the exotic European bee-eater, which have recently begun nesting in the UK.

The coffins used for previous papal burials consisted of three nesting coffins made of cypress, lead and oak - but Pope Francis asked to be buried in a simple wooden casket.

"The ground nesting birds, like the skylarks and the meadow pipits, the wrens and stonechats, they'll have lost their nests and eggs."

Modern housing and development have also reduced the availability of suitable nesting sites.

To limit the risk of infection, avoid rodents, their droppings and nesting materials.