Euploea core is distributed from India and Sri Lanka to south China, and via the Malay Peninsula to Sumatra, Borneo, Sulawesi, Java, Bali, New Guinea and Australia. This species can be found in a wide variety of lowland habitats including tropical rainforest, dry woodland, Acacia scrub, beach hinterlands, parks and gardens. Common crow has a weak, sailing flight and occurs in forest and open country, roosts together in large numbers in sheltered woodlots during dry season. On the wing throughout the year. Comes to flowers and wet mud. Flies upto 2,500 m amsl in the North West Himalaya.

The adult butterfly is easily recognized by its dark brown wings that are spotted white along the margins. The male's forewing has a bow-shaped hind margin, while the female's is straight. Males are often seen imbibing moisture from patches of damp ground. They also visit decomposing fruit on the forest floor. Females are more commonly seen when nectaring, and have a strong preference for the flowers of Lantana. Thorax with black spots. Sexes similar.

The Common Crow Butterfly has a strong scent that may allow predators to identify it as inedible. It also produces toxins so strong that eating just one butterfly may induce a bird to vomit. However, not all birds are sensitive to the toxins and common predators such as spiders, dragonflies, flies and wasps experience no ill effects from eating these butterflies.

Common Crow congregate in large numbers over winter and go into a kind of dormant state called overwintering. Another interesting thing about crow butterflies is that they have only four normal legs. Insects are supposed to have six. Well, they do really have six, but their first two legs never fully develop.