Puffin numbers on the Farne Islands have seen a 15 per cent increase with the population ... Picture: Rachel Bigsby/National Trust Puffins are the only seabirds that lay their eggs in burrows on the ...
Rangers monitor the populations by observing the burrows, looking for signs such as puffin footprints, fresh digging and hatched eggshells as well as birds arriving with fresh fish in their beaks.
A puffin population has been declared "stable ... Ms Jackson said: "Puffins nest in separate burrows and clean them out. "In that way, the disease is less likely to spread as fast as it does ...