Long-term monitoring of pelicans in National Chambal Sanctuary, India
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Abstract
Monitoring of Gharial Gavialis gangeticus in National Chambal Sanctuary (NCS) since 1983 has resulted in collection of data on other ecological associates, located between 25.8474–26.4389 0N, 76.5645–79.2132 0E. One such beneficiary of this long term monitoring program are the pelicans, locally called ‘Hawaseel’. Pelican species visiting Chambal from November to March include the Dalmatian Pelecanus crispus, Great White Pelecanus onocrotalus, and Spot-billed Pelecanus philippensis. Species-wise separation of pelicans at the sites of congregation is often difficult. The total number of pelicans counted during the annual census from 2003 to 2016 was 4,429. The study area extends over 435 km comprising 12 study zones, 99% counts were made in the study zones X, XI and XII. These zones stretch over 115 km that occur near the confluence of Chambal with river Yamuna. Here, the river is deep. Other large birds seen with the pelican squadrons are groups of Cormorant Phalacrocorax carbo, Painted Stork Mycteria leucocephala, Nakta or Comb Duck Sarkidiornis melanotos, and the Greylag Goose Anser anser. Other large birds seen on the riverbanks were the Common Crane Grus grus, Sarus Crane Grus antigon, Greater Flamingo Phoenicopterus species, and Demoiselle Crane Grus virgo. The study provides a baseline about the population of pelicans and the availability of large wetland birds in NCS. The biodiversity significance of NCS got highlighted because of the ongoing gharial conservation programme. The Chambal River Sanctuary is a composite unit of several un-notified ‘core areas’. The sanctuary fulfills six of the nine criteria for possible consideration as an international Ramsar Wetland.
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