Barn Swallows in Manipur Shed Migratory Trait, Settle Permanently
A new study published in the Journal of Wildlife Science suggests that descendants of migratory barn swallows in Manipur's Imphal Valley may have stopped their long journeys and settled permanently. This finding indicates a possible mixed population resulting from ancient movements and inter-breeding. The study, based on field surveys in 2022-2023, found thriving colonies in the Imphal Valley, with adult barn swallows seen nesting year-round. Scientists propose two explanations: ideal local conditions (mild climate, insects, structures for nests) leading to a loss of migratory trait, or interbreeding over millennia. Local culture, where Meitei community regards barn swallows as a symbol of prosperity, also contributes to their protection.
Key Points
- A study suggests barn swallows in Manipur's Imphal Valley have become resident, shedding their migratory trait.
- The birds may represent a mixed population due to ancient inter-breeding.
- Ideal local environmental conditions and cultural protection by the Meitei community are cited as reasons for this change.
- The study extends the known breeding range of barn swallows in the Indian subcontinent.
- This highlights a critical ecological gap and challenges assumptions about subspecies limits.
Exam Facts
- The study was published in the Journal of Wildlife Science.
- The study was conducted by Amarjeet Kaur and R. Suresh Kumar of the Wildlife Institute of India (WII).
- The barn swallow is scientifically known as Hirundo rustica.
- The Meitei community regards the barn swallow as a symbol of Goddess Lakshmi.
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