Caterpillar found on wooden windowframe

Caterpillar found on wooden windowframe

Observation - Caterpillar found on wooden windowframe - UK and Ireland. Description: Caterpillar found on wooden windowframe, possibly looking to hibernate in crack underneath. Put onto leaf to photograph, so not food plant.

Caterpillar found on wooden windowframe, possibly looking to hibernate in crack underneath. Put onto leaf to photograph, so not food plant.