Work starts to protect rare seabirds at Gronant
14 April 2014 Last updated at 08:20 BST
One of the UK's rarest seabirds, the Little Tern, is in danger of losing its last remaining Welsh breeding ground, the RSPB says.
The small birds return from Africa every April to breed on a small stretch of shingle on the north Wales coast, but the conservation charity says rising sea levels and coastal flooding is endangering their habitat.
Kelvin Jones from the British Trust for Ornithology spoke to Felicity Evans on BBC Radio Wales.