Special cameras reveal the underground lives of puffins
7 July 2011 Last updated at 11:37 BST
The previously hidden lives of puffins on Coquet Island have been filmed by an underground camera.
So far it has obtained what is thought to be the first footage of a puffin feeding her young on the island, which is off the coast of Northumberland.
Footage is being sent to the Northumberland Seabird Centre so visitors can watch it and learn about the birds.
Danny Savage reports.