Filming the kingfisher was Ryan's job and he didn't have a nest box to rely on.

BBC: Framlingham wildlife filmmaking twins Paul and Ryan

Wildlife experts believe it could take up to 18 months before a barn owl moves into a nest box.

BBC: Barn owl at a farm

His previous breeding partner was found dead in a nest box last November.

BBC: New hope for East Yorkshire barn owl population

So far there have been more than 400 inquiries from people who want to have a nest box on their land.

BBC: Barn owl at a farm

For the barn owls, cameras were set up in a nest box on an oak tree which fed pictures back to the wooden hide.

BBC: Framlingham wildlife filmmaking twins Paul and Ryan

At some of the sites, wide margins of rough grass have been created near nest box sites to ensure the owls have enough voles to feed on.

BBC: Barn owl at a farm

To bolster its green image the Nest thermostat comes in a bamboo box.

FORBES: Nest Labs Brings Apple Magic To Thermostats