Climate change fundamentally affecting European birds, study shows

Changes to birds' size, habits and morphology have been linked to rising temperatures

Global warming is changing European birds as we know them, a study has found, but it's not just the increase in temperature that's to blame.

Researchers have found that garden warblers, for example, are having a quarter fewer chicks, which has huge implications for the species. Chiffchaffs are laying their eggs 12 days earlier. Some birds are decreasing in size, while others, such as redstarts, are getting larger.