Some male butterflies claim particular areas and defend them from rival butterflies.
Speckled woods choose areas where the sunlight breaks through the trees.
They patrol that patch and investigate every insect in the neighbourhood. They are on the look out for females to mate with or male intruders who they attack and chase away. You might see them spiralling up into the tree-tops, clashing wings with each other in battle. The butterfly that claimed the territory first usually wins.