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

Butterflies - Common Blue (Polyommatus icarus)

Not as 'common' as the name suggests, although some colonies still support large numbers.

The bright blue males are most easily seen while the brown or brown/blue females are more secretive in behavior.

A visit to a known colony late in the evening or during sunset provides the best opportunity to see this butterflt close-up as they tend to roost in groups on a dried grass stem, facing down, wings closed but one side face on to the sun to absorb as much heat as possible before the sun finally sets.

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

Common Bird's-foot-trefoil (Lotus corniculatus)
Black Medick (Medicago lupulina)
White Clover (Trifolium repens)
Lesser Trefoil (Trifolium dubium)

The Common Blue is found in a variety of grassy habitats, particularly where the larval foodplants can be found in sunny sheltered positions such as roadside verges, woodland clearings, disused railway lines, quarries and post-industrial brownfield sites.

Resident in Warwickshire.

Draycote Meadows (WWT Reserve)
Shadowbrook Meadow (WWT Reserve)
Loxley Church Meadow (WWT Reserve)
Stockton Cutting (WWT Reserve)
Goldicote Cutting (WWT Reserve)
Henley Sidings (WWT Reserve)

Find out more about the Common Blue online at the following links;

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

Common Blue Flight Chart

Distribution Maps

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

Common BlueCommon Blue © John Carter - Male

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

15/05/2018 Cladswell

06/05/2017 Fenny Compton Tunnels

15/05/2016 Kingsbury Colliery Spoilheap

13/05/2015 Bishop's Hill

05/05/2014 Draycote Sustrans

26/05/2013 Bishops Hill, Bishops Itchington

11/05/2012 Fenny Compton-Tunnel Bank

28/04/2011 Long Marston Railway Sidings

15/05/2010 Southam Bypass North

02/05/2009 Tesco's, Warwick

26/04/2008 Bucks Hill, Nuneaton

27/04/2007 Malpass Site, Rugby

Other Species

Please select an alternative species from the list below.