More butterflies than ever before have been spotted at the Aldbury Nowers Nature Reserve.
The latest weekly survey recorded 296 marbled whites, 144 ringlets, 145 meadow browns, 57 large skippers and 19 dark green fritillaries.
The record-breaking numbers are a result of the hot, sunny weather and the work of site-manager the Herts and Middlesex Wildlife Trust.
It nurtures the plants butterflies like - for instance, the dark green fritillary, rarely seen around here, likes to lay its legs on the dog-violet and hairy violet.
Two dark green fritillaries were spotted at Aldbury Nowers in 2010, followed by 10 in 2011, 38 in 2012 and 40 so far this year. Senior reserves officer for the Trust Paul Thrush said: “This reserve has become the best place in the county for butterflies.”