Great Knot / Calidris tenuirostris

  • IASbaba
  • November 23, 2022
  • 0
Environment & Ecology
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Context: Unveiling yet another mystery of avian migrations, a great knot from Russia, belonging to the endangered Calidris tenuirostris (Horsfield, 1821), has found its way to Kerala’s coast, flying over 9,000 km for a winter sojourn.

About Great Knot:

  • It is a small wader.
  • It is the largest of the Calidris species
  • It is listed as an ‘endangered’ species by the IUCN.
  • It is listed in Appendix I of the Convention on the Conservation of Migratory Species of Wild Animals.
  • Habitat: Grassland, Marine Neritic, Marine Intertidal, Marine Coastal/Supratidal.
    • This species breeds in northeast Siberia, Russia, wintering mainly in Australia, but also throughout the coastline of South-East Asia and on the coasts of India, Bangladesh, Pakistan, and the eastern coast of the Arabian Peninsula.
  • Threats: Loss of intertidal stopover habitats in the Yellow Sea region is thought to be a key driver in the population declines of shorebirds
    • It is also potentially threatened by climate change.
    • Recent evidence shows a very rapid population decline caused by the reclamation of non-breeding stopover grounds, and under the assumption that further proposed reclamation projects will cause additional declines in the future.

Source: The Hindu

Previous Year Questions

Q.1) Which of the following is not a bird?

  1. Golden Mahseer
  2. Indian Nightjar
  3. Spoonbill
  4. White Ibis

Q.2) Which one of the following is a filter feeder?

  1. Catfish
  2. Octopus
  3. Oyster
  4. Pelican


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