Clouded Yellow

Colias croceus (58.010)

The distribution of the Clouded Yellow in Warwickshire depends upon migration events from mainland Europe. While the Clouded Yellow is known to survive our cold winters on the south coast with known colonies in the Bournemouth area and elsewhere, Warwickshire currently sits outside its normal breeding range. It's presence or absence here in any given year relies on the fortunes of those resident on the south coast and the migratory ability of the species from mainland Europe.

When adult Clouded Yellows do manage to make it to our region, they will if numbers allow breed in suitable grassland habitats. Their offspring may attempt to breed again or migrate south as the colder weather of autumn approaches. With climate change, it is likely that we will be seeing more of the Clouded Yellow.

Habitat Requirements

In Warwickshire, the Clouded Yellow is generally 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.

Larval Foodplants

The larvae of the Clouded Yellow feed on wild and cultivated Clovers (Trifolium spp.), Lucerne (Medicago sativa) and occasionally Birds-foot Trefoil (Lotus corniculatus).

Distribution in Warwickshire

See maps below. Distribution text required.

Distribution of the Clouded Yellow 1995-2004 inclusive


Distribution of the Clouded Yellow 2005-2009 inclusive


Distribution of the Clouded Yellow 2010-2014 inclusive


Distribution of the Clouded Yellow 2015-2019 inclusive


Submit your records

Use our online recording system to submit your observations of butterflies and day-flying moths.