it wouldn’t make much of a breakfast, but this tiny egg could give a schoolgirl and her pet hens a place in the guinness book of records shannon hayes, 12, believes one of them has laid the smallest chicken egg in the world after doing some research on the internet, she thinks its length of 18cm – smaller than a 5p coin – shaves two millimetres off the previous title holder shannon said: ‘i’m confident it’s the smallest it is very tiny and you wouldn’t want it for breakfast’ shannon hayes, centre, believes her pet hen, right, has laid the world's smallest ever egg, left  the tiny egg, left,  is only a small fraction of the normal size of the traditional breakfast favourite, right  the tiny egg, which was laid in capel iwan, carmarthenshire, is smaller than a five pence piece, pictured  she keeps seven hens at her family home in capel iwan, carmarthenshire, but she is not sure which laid the tiny egg shannon spotted it among the ordinary sized eggs in her hen coop fearful of it being crushed, she immediately took it into the house to be measured in 2011, an american farmer claimed his hen had laid the world’s smallest chicken egg, measuring 21cm long that was beaten in 2014 by an egg one millimetre smaller laid in somerset by a hen called muffin meanwhile, shannon is storing her potential world record breaker it in the fridge for safe keeping shannon believes that her egg, which measures just 18cm in length is 3mm smaller than the current record 
shannon hayes carmarthenshire 12 year old 19cm 21cm somerset
shannon hayes spotted the tiny egg at her home in carmarthenshire . she rescued it fearing it was going to be crushed by the regular eggs . the 12 year old measured the egg and discovered it was just 19cm long . it is believed the previous record holder was a 21cm egg laid in somerset 