Chalk Hill Blue

Polyommatus coridon


Habitat Requirements


Larval Foodplants

The larvae of the Chalk Hill Blue feed on Horseshoe Vetch (Hippocrepis comosa).

The Chalk Hill Blue became extinct in Warwickshire in the 19th Century.

Historic Records in Warwickshire

  • 2019: Several (max 6) recorded at Ettington Cutting (July/August)
  • 1937: One at Bubbenhall by J. A. Hancocx (12 August)1.
  • 1925: One at Thurlaston by Rugby School Natural History Society (25 July)1.

1. Smith, R. and Brown, D. (1979) The Lepidoptera of Warwickshire; a provisional list. Part One, Butterflies 1900-1977, Hesperiidae to Satyridae.

Returning the Chalk Hill Blue to Warwickshire (2018-2019)

The Chalk Hill Blue has not been a resident species in Warwickshire since the 19th century but in recent years, individual butterflies have been sighted in the south of the county. Conservation measures in neighbouring Gloucestershire and Oxfordshire have enabled the Chalk Hill Blue to recover some of its former range, meaning that colonies are now found very close to the Warwickshire border.

This innovative project will restore the threatened Chalk Hill Blue butterfly to Warwickshire after an absence of over 100 years.
Find out more...

Heritage Fund

Distribution in Warwickshire

See maps below. Distribution text required.

Distribution of the Chalk Hill Blue 1995-2004 inclusive


Distribution of the Chalk Hill Blue 2005-2009 inclusive


Distribution of the Chalk Hill Blue 2010-2014 inclusive


Distribution of the Chalk Hill Blue 2015-2019 inclusive


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