i Long-term changes in the populations of woodland birds A re-survey of breeding bird populations of broadleaved and mixed woodlands in 2003/04 to examine changes since the 1960s, 1970s and 1980s and test these changes against a range of hypotheses for their causes. A Amar 1 , C M Hewson 2 , R M Thewlis 2 , K W Smith 1 , R J Fuller 2 , J A Lindsell 1 , G Conway 2 and S Butler 1 1. Royal Society for the Protection of Birds, The Lodge, Sandy, Bedfordshire 2. British Trust for Ornithology, The Nunnery, Thetford, Norfolk