Millhoppers Pasture, Hertfordshire | Butterfly ConservationThis ancient pasture has a stream-fed pond and ancient, pollarded Black Poplars. It is a rare piece of unimproved grassland surviving in an area of rich soils and intensive farmland.Features The site has strong populations of grass-feeding butterfly species such as Ringlet and Marbled White , and 21 species overall have been recorded. Though small, the site has a lot of rich invertebrate habitats. Lush vegetated ditches mean dragonflies https://butterfly-conservation.org/our-work/reserves/millhoppers-pasture-hertfordshire