Wildlife

Wild Common Blue Butterfly Welfare

The common blue butterfly has declined significantly in the UK due to grassland loss, and supporting its habitat makes a direct contribution to invertebrate welfare.

Key Facts

Common blue larvae feed exclusively on bird's foot trefoil and related legumes
Calcareous grassland and chalk downland are prime habitat, much of which has been lost to agriculture
UK butterfly populations have declined by 17% on average since the 1970s
Common blue females lay eggs singly on bird's foot trefoil leaflets
Ant associations are important for larvae, which are attended by ants for honeydew secretions

Welfare Considerations

Common blue butterfly welfare is tied to grassland ecosystem health. Restoring and managing flower-rich grassland supports butterfly populations and broader invertebrate communities.

What You Can Do

Plant bird's foot trefoil and other legumes in garden areas for common blue habitat
Support wildflower meadow restoration projects in your region
Advocate for chalk grassland protection and restoration in planning policy