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Butterfly Conservation Warwickshire - Branch Logo featuring the White-letter Hairstreak butterfly.Butterfly Conservation.

Butterflies - Clouded Yellow (Colias croceus)

The adult butterfly can be seen from Mid May to June, late July to late August and late September through to early October.

  • Larval Food Plants
  • Habitat
  • Status
  • Key Sites
  • Links
  • Photographs

Wild and cultivated Clovers (Trifolium sp.), Lucerne (Medicago sativa) and occasionally Birds-foot Trefoil (Lotus corniculatus)

In Warwickshire, the Clouded Yellow is an uncommon migrant but during 'Clouded Yellow' years where good weather and southerly winds combine, large numbers may be forced northwards from mainland Europe, through southern Britain into our region. In, Warwickshire like much of the the UK experienced large numbers of Clouded Yellows.

Migrant in Warwickshire.

Can be seen anywhere in the region, especially places where there is a plentiful supply of nectar. Red Clover fields are a good place to look.

Find out more about the Clouded Yellow online at the following links;

Flight Chart
The flight chart below is based on observations of the adult Clouded Yellow butterfly in Warwickshire between 2005 and 2008. Peak periods are shown in dark green.

Clouded Yellow Flight Chart

Distribution Maps

Clouded Yellow - 2011 records / distribution. Clouded Yellow - 2010 records / distribution. Clouded Yellow - 2000 to 2009 records / distribution.
2011 (1yr) 2010 (1yr) 2000-09 (10yr)

Clouded YellowClouded Yellow © Steven Cheshire - Female at Nuneaton, Warwickshire

Annual First Sightings
First sighting dates are based on records of Clouded Yellow submitted online. Please note that these dates are not updated retrospectively to include records submitted to the branch recorder in other forms.

15/07/2018 Salford Priors

15/08/2017 Brandon Marsh

02/06/2016 Swift Valley

05/06/2015 Kenilworth

10/06/2014 Draycote Water

26/07/2013 High Street, Leamington Spa

23/03/2012 Ryton Pools Country Park

14/07/2011 Broadwell

20/07/2010 Draycote Meadows

30/05/2009 Ryton Wood Meadows


29/05/2007 Bishops Hill, Bishops Itchington

Other Species

Please select an alternative species from the list below.