Climate change is already affecting the migration patterns of birds that visit the UK. Some arrive early and leave later while some don\u2019t visit us at all anymore. On this edition of Nature\u2019s Voice Jane Markham talks to the RSPB\u2019s Andrew Dodd about how it\u2019s becoming harder for species to adapt to this change. She also meets ecologist Dr Simon Pickering from the green energy provider Ecotricity to discuss the role of renewable energy in averting the worst effects of climate change.