- Lifespan
- 2–6 weeks in the wild; longer in captivity
- Size & Weight
- Wingspan 32–35 mm
- Habitat
- Open, sunny habitats including gardens, parks, grasslands, and disturbed ground with abundant low-growing plants.
- UK Distribution
- Widespread across England, Wales, and southern Scotland; primarily a summer migrant arriving from continental Europe, though occasional small resident populations may establish in mild years.
- Diet
- Adults feed on nectar from thistles, mallows, teasels, and other wildflowers; caterpillars are polyphagous, feeding on over 300 plant species including nettles, mallows, thistles, and legumes.
- Predators
- Birds, spiders, and parasitic wasps (particularly Tachina flies and ichneumonids).
- Mating Season
- May to October (multiple generations per year during the breeding season).
- Breeding
- Females lay eggs singly on host plants; caterpillars develop in approximately 3–4 weeks; typically 2–3 generations per year in the UK, with migrants potentially contributing additional broods.
- Behaviour
- Highly migratory, with populations undertaking long-distance flights from North Africa and southern Europe. Males are territorial and patrol in a low, rapid flight pattern. Adults are restless, energetic fliers and difficult to observe at rest.