In News:

On the occasion of World Environment Day 2025, the Tamil Nadu government officially declared the Greater Flamingo Sanctuary at Dhanushkodi, Ramanathapuram district, aiming to protect a vital stopover site for migratory birds along the Central Asian Flyway.

Key Highlights

What is it?

A newly notified wildlife sanctuary dedicated to safeguarding migratory wetland birds, especially the greater flamingo (Phoenicopterus roseus), in their natural resting and breeding habitat.

Location and Area:

• Located in Rameshwaram taluk, Ramanathapuram district, Tamil Nadu.
• Covers approximately 524.7 hectares of revenue and forest land.
• Lies within the Gulf of Mannar Biosphere Reserve, a globally recognized marine ecosystem.

Ecological Significance

• Functions as a critical site along the Central Asian Flyway, one of the key migratory bird routes.
• As per the 2023–24 Wetland Bird Survey, the region hosts 10,700+ wetland birds representing 128 species, including:
  • Flamingos (greater and lesser)
  • Herons, egrets, sandpipers, etc.
• The sanctuary harbours diverse ecosystems, such as:
  • Mangroves (Avicennia, Rhizophora)
  • Mudflats, marshes, sand dunes, and lagoons
  • Nesting grounds for sea turtles and marine biodiversity

Conservation and Socioeconomic Benefits

• Strengthens coastal resilience by preventing erosion through natural mangrove buffers.
• Promotes responsible ecotourism, raising awareness of wetland and avian conservation.
• Supports local livelihoods via employment in conservation and tourism activities.

About the Greater Flamingo (Phoenicopterus roseus)

Attribute                                Details

Size                                       90–150 cm tall, long necks and legs

Coloration                            Pink hue from carotenoid-rich diet

Feeding                                 Uses specialized downward-curved bill for filter feeding in shallow waters

Reproduction                        Builds cone-shaped mud nests, lays 1–2 eggs, both parents incubate

Chick Rearing                      Chicks are white and fed through regurgitation

Social Traits                          Highly gregarious, breeds in large colonies and flies in V-formations

Behavioral Note                   Often seen standing on one leg, possibly to conserve body heat