Wildlife

Wild Marsh Fritillary Habitat and Welfare

The marsh fritillary is one of the UK's most threatened butterflies, dependent on devil's bit scabious grassland managed with appropriate grazing.

Key Facts

Marsh fritillary larvae feed exclusively on devil's bit scabious
UK populations are highly fragmented and prone to local extinction
Appropriate cattle or pony grazing maintains the open but tussocky grassland larvae need
Web-spinning larval groups are vulnerable to cold wet springs that delay development
English Nature and Wildlife Trusts manage key marsh fritillary sites across Wales and southwest England

Welfare Considerations

Marsh fritillary larvae in overwintered webs face mortality from unseasonable cold and from management failures that eliminate their host plant. Individual welfare during starvation and exposure is real under precautionary insect welfare approaches. Habitat management that maintains devil's bit scabious is a direct welfare and conservation intervention.

What You Can Do

Support Wildlife Trust reserves managing marsh fritillary grasslands
Advocate for agri-environment funding for butterfly habitat management
Visit marsh fritillary sites and donate to butterfly conservation organisations