The Big Garden Birdwatch results have arrived and in this episode of Nature's Voice we hear from the children of a Folkestone Primary school about what they did for their Big Schools Birdwatch.  We look at the ups and downs for this year's top ten birds in the survey plus the RSPB launches a new Centre for Conservation Science and Jane Markham talks to one of the scientists, Matthew Carroll, about his work investigating possible links between climate change and the declining populations of Kittiwakes.