Wildlife

Wild Marsh Fritillary Welfare

The marsh fritillary is one of the UK's most threatened butterflies, with larvae living communally in webs on devil's-bit scabious plants.

Key Facts

Marsh fritillary larvae overwinter communally in silk webs on their food plant
They are highly vulnerable to cold spells that destroy larval webs
Loss of traditionally managed damp grassland has caused severe decline
Larvae that cannot find adequate food plants before winter fail to complete development
Populations are fragmented and metapopulation dynamics are critical for survival

Welfare Considerations

Marsh fritillary larvae unable to find adequate food plant before winter development halts face starvation. Communal webs are vulnerable to habitat management at the wrong time of year. Grassland management that maintains devil's-bit scabious populations and avoids winter disturbance of larval webs directly protects marsh fritillary welfare.

What You Can Do

Support traditional hay meadow management on marsh fritillary sites
Advocate for sensitive management timing to protect larval webs
Donate to butterfly conservation organisations targeting marsh fritillary recovery