India, May 15 -- Parts of Bengaluru witnessed a delightful sight this week as swarms of blue tiger butterflies fluttered through the city skies, captivating residents and nature enthusiasts alike.

Videos of the colourful migration have flooded social media, with many describing the scene as nothing short of magical.

The butterfly movement is part of the annual migration of the blue tiger (Tirumala limniace), a species known for its striking black-and-blue patterned wings. These butterflies are typically seen during the onset of the Indian monsoon, as they travel across the Western and Eastern Ghats in search of food and breeding grounds.

One of the videos was also shared by the Bengaluru Sustainability Forum (BSF), a non-profit working...