Butterfly numbers are increasing in Northumberland – despite a decade of decline elsewhere.
A new report from the Butterfly Conservation and Centre for Ecology and Hydrology shows that numbers have risen, particularly in the north of the county.
Global warming is believed to be behind the move north from the south of England of many species, according to The State of the UK’s Butterflies 2011.
Figures show that the number of common and widespread butterflies in England fell by roughly 25% in a decade. But over the border in Scotland the number of butterflies increased by 11% in the same time period.
The charity’s experts say the migration can also be attributed to Northumberland and Scotland’s unspoilt rural landscapes.
The Comma butterfly is the main species that has seen an increase in numbers across both Northumberland and the Scottish Borders. The Marsh Fritillary is also doing well.