For eighteen years the author has monitored butterflies on his plot of land. Ffe not only observed which species occur but also noted their behaviour. The different forms of behaviour monitored were perching, flying, territorial behaviour, courtship and mating, feeding, egg-laying and others. The survey showed that butterflies spend the majority of their time flying and feeding. Summer butterflies spend more time on feeding than spring butterflies. Territorial behaviour was found with the males of the Wall Brown (Lasiommata megera) and the Speckled Wood (Pararge aegeria).