BBC News
Published
People across the UK are being asked to take part in an annual count of butterflies amid fears they have been affected by poor weather this spring.
TV naturalist Chris Packham said participating in the Big Butterfly Count could provide key research on the impact of climate change on wildlife.
Members of the public should spend 15 minutes outside counting the number and type of butterflies they see.
The annual count will take place over the next three weeks.
Butterfly Conservation, the wildlife charity running the scheme, said its current records show that many species of butterflies have been affected by this year's unseasonably cold and wet spring.