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29th January 2025 (12 Topics)

Asian Waterbird Census 2025

Context

The Asian Waterbird Census 2025 has been recently conducted in the Coringa Wildlife Sanctuary (CWS), located in the Godavari estuary of Andhra Pradesh. CWS is a crucial feeding ground for migratory birds in the Asian Flyway.

Key Findings:

  • Bird Diversity: A total of 106 bird species were recorded, including 70 migratory species. 39,725 birds sighted in the sanctuary and adjoining wetlands.
  • Endangered and Vulnerable Species:
    • 3 endangered species: Black-bellied Tern, Great Knot, and Indian Skimmer.
    • 11 species were categorized as Near Threatened, and the Common Pochard was the only Vulnerable species.
  • Migratory Birds: Birds, such as the Great Knot, migrated from regions like Siberia, Russia, China, and Mongolia for winter.
    • Bhairavapalem and Etimoga are key locations for these migratory species, with the Great Knot sighted at these mudflats.
  • Global Tracking: A Great Knot, tagged in Russia, traveled 7,500 km and was spotted in Bhairavapalem and Etimoga.

Fact Box:

Coringa Wildlife Sanctuary (CWS)

  • The Coringa Wildlife Sanctuary (CWS) is situated at the confluence of the Godavari River and the Bay of Bengal, covering an area of 235 square kilometers.
  • CWS was established as a wildlife sanctuary by the Government of Andhra Pradesh in 1978. The sanctuary is managed by the Andhra Pradesh Forest Department.
  • It is located on the western coast of Andhra Pradesh, about 20 km from Kakinada, in East Godavari District.
  • The sanctuary lies within the Godavari Estuary, which includes mangrove forests and dry deciduous tropical forests. The sanctuary is crisscrossed by the Coringa and Gaderu rivers, along with their branches, creating a unique wetland ecosystem.
  • The area is home to extensive mangrove forests, which make up around 50% of the sanctuary’s area. It is considered the largest surviving patch of mangrove forests in Andhra Pradesh.

Godavari River

  • The Godavari is the largest Peninsular River system in India, often referred to as the Dakshin Ganga (Southern Ganges).
  • The river originates from Trimbakeshwar, near Nasik in Maharashtra and flows eastward for approximately 1,465 km before emptying into the Bay of Bengal.
  • The river basin is bordered by various mountain ranges: to the north by the Satmala hills, to the south by the Ajanta range and Mahadeo hills, to the east by the Eastern Ghats, and to the west by the Western Ghats.
  • The Godavari basin spans across several Indian states including Maharashtra, Telangana, Andhra Pradesh, Chhattisgarh, and Odisha. It also covers smaller areas in Madhya Pradesh, Karnataka, and the Union Territory of Puducherry.
  • Tributaries: The Godavari has several important tributaries, including:
    • Right Bank Tributaries: Pravara, Manjra, and Maner.
    • Left Bank Tributaries: Purna, Pranhita, Indravati, and Sabari.
  • Other significant tributaries include the Penganga, Wardha, Wainganga, and Indravati rivers. The Pranhita is formed by the confluence of the Wainganga, Penganga, and Wardha rivers.

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