18 August 2014 Last updated at 21:44
Two rare birds usually found in the Mediterranean region have been spotted building a nest in Lincolnshire.
The pair of glossy ibis did not raise young at the RSPB site in Frampton Marsh, near Boston, but it is believed to be the first attempt by the species in the UK.
Site manager John Badley said it could mean the beginning of a colonisation of the birds usually found in Spain.
It is thought drier conditions are pushing the birds further north.
RSPB manager John Badley, said: "The birds built up a nest platform out of the water in just a few days, but despite being seen courting and displaying, they didn't lay any eggs.
"This could be the behaviour of immature birds practising before they are mature enough to breed.