In the run-up to the Festival of Nature being held in Bristol this year, we are running a 24-hour live video feed of a bird box installed at Folly Farm in Pensford.

A couple of blue tits have just moved into the box, which was put into a tree in the farm's apple orchard a few weeks ago.

The cedar wood box has a camera in its roof – all supplied by the UK's leading supplier of such equipment, Gardenature.

Philip Niemand, centre director of Folly Farm Centre, an education and conference centre in Avon Wildlife Trust's 250 acre nature reserve, which overlooks Chew Valley lake, said: "We are really looking forward to being able to watch what goes on in there.

"We have never had anything like this on the farm, it is a great opportunity for us."

Jason Alexander, of Gardenature, said: "The birds have already started building their nest and you can see them flying in and out. "It won't be long before they start laying eggs, and then probably at the end of May we will see the young birds leaving the nest."

The Festival of Nature will return to the Harbourside in Bristol.

The UK'S largest celebration of the natural world will take place on the weekend of June 6 and 7, and is completely free.

The festival is a weekend of films, exhibitions, walks, talks, workshops and competitions for all ages. There will also be a food market, selling produce from across the South West.

As 2009 is the bicentenary celebrations of Charles Darwin, the festival will feature the British Council's international Darwin Now exhibition, giving visitors the opportunity to explore the ideas that lie at the heart of the theory of evolution.