Children built nest boxes, made homes for ladybirds and brought life to a piece of woodland as part of a worldwide day of action.
Girls from Radlett District Guides joined 10 million others across the world on Saturday to celebrate World Thinking Day, which encourages friendship, advocacy and fundraising.
Around 60 girls and their leaders met at Woodland Lodge in Scrubbits Park Road in Radlett for a district activity day focusing on the environment
The girls had made bird feeders, bat and bird boxes and insect houses and spent the day putting them up in woodland surrounding their hut.
The guides have worked to bring life to this formerly neglected and overgrown area.
For the past four months they have planted trees and bulbs in partnership with the St Albans Probation Trust team and with grants from Hertsmere Borough Council and Radlett Horticultural Society.