RSPB's Big Wild Sleep-out encourages thousands to camp
9 August 2013 Last updated at 09:54 BST
Thousands of children and their parents are preparing to swap their bedrooms for their back gardens and spend the night camping out.
It is part of the Royal Society for the Protection of Birds' Big Wild Sleep-out.
The charity wants people to become more familiar with nature on their doorstep.
Tim Muffett reports.