It does to birds. Male sedge warblers with 'big' voices have the best chance of attracting a mate. The intriguing life and loves of this little brown bird is just one of the hot topics on offer during the UK's premier national science festival in Cardiff from 7-11 September. The presenters will use an entertaining mix of props, video footage, sound and lighting effects to help them convey their fascinating and important research. The audience can tune in to the sound of sedge warblers.
Females prefer males with the most complex songs.
The slippery world of ragworm farming and their biological clocks. A snail's guide to Europe. How fossilised snails are helping researchers to build up a detailed picture of European landscapes since the end of the last Ice Age, around ten thousand years ago. Fast cars and slow fish. Exploring the links between 'acid rain' and aluminium, and their effects on salmon and trout in upland rivers, particularly in Wales and Scotland.