WHEN youngster Isobel Cullen went to check on her chickens it was probably the last thing she egg-pected.

But the 10-year-old was shocked to find an enormous egg, more than three times bigger than the average.

It was laid by six-month-old Bluebell - a grey hybrid chicken - and measured 85mm in length and weighed 150g.

Her mum, Sarah Cullen, of The Street, Chelsworth, near Hadleigh, said: “Isobel ran inside to tell everyone, she did not know what had happened. I thought it was a mushroom or a massive stone, and then we got terribly excited.

“I do not know why a chicken would have laid an egg that big, she’s never done it before.”

The Cullens are having to keep the egg away from their Welsh Terrier, Lottie, who they fear will eat it if given the chance. But Mrs Cullen, who works as a health visitor, said their two cats were less interested in the egg.

The family are now deciding what to do with the oversized egg but have not ruled out making a ‘really big omelette’.

The family, who have three hens and two cockerels, keep the eggs for themselves or give them away to friends.

A spokeswoman for the Guinness World Records said they do not currently monitor records for chicken eggs.