The numbers had been much less this yr as a result of heavy rains in January which resulted in overflowing of virtually all tanks
As many as 26,868 birds belonging to 73 home and migratory species have been noticed throughout the just lately held eleventh version of Tamirabharani Waterbird Rely (TWC 2021) in 62 irrigation tanks in Tirunelveli, Tenkasi and Thoothukudi districts.
It was organised by Agasthyamalai Group Conservation Centre (ACCC), Manimutharu; District Science Centre, Tirunelveli; Pearl Metropolis Nature Society, Thoothukudi; and Nellai Nature Membership, Tirunelveli; on January 30 and 31. A day earlier, an orientation programme was held for the 120 volunteers – college students, farmers, entrepreneurs, homemakers and physicians from throughout the State. They had been divided into seven groups to conduct the depend in 62 tanks within the three districts. Ten new tanks had been added this yr in Tenkasi district.
Of the 26,868 birds sighted, there have been over 4,300 Lesser Whistling Duck, 4,200 Cattle Egret. Among the many migratory fowl species, 1,398 Whiskered Tern, 1,343 Eurasian Wigeon, 1,223 Garganey, 1,019 Northern Pintail had been recorded.
A superb variety of birds had been recorded in Vellur tank the place 3,578 birds belonging to 30 species had been noticed which was adopted by Surandai tank the place 2,566 from 33 species had been sighted. Manur tank with 1,627 birds (30 species), Sundarapandiapuram tank with 1,250 birds (19 species), Vagaikulam tank with 1,193 birds (30) and Arumugamangalam tank with 1,130 birds of 27 species accounted for the most important numbers.
Whereas Asian Open-Invoice, Oriental Darter, Little Cormorant, Indian Shag and Black-headed Ibis breeding colonies had been recorded in Gangaikondan tank, an excellent variety of Oriental Darter breeding colonies with chicks had been recorded in Nainarkulam in Tirunelveli City, within the coronary heart of town.
Black-tailed Godwits, a migratory fowl from Siberia, was seen in Sengulam close to Mukkoodal and Kalkurichikulam close to Thazhaiyoothu and it has been categorized as ‘near-threatened species’ within the Worldwide Union for Conservation of Nature’s ‘Crimson Checklist,’ stated M. Mathivanan, Senior Analysis Affiliate of ATREE’s ACCC, who coordinated the census.
Bar-headed geese, a migratory fowl from Mangolia and recognized to be one of many highest flying fowl species, had been seen in Veppankulam in Sivanthipatti. Volunteer Sankar, who participated in TWC 2020, included this tank for census based mostly on his year-long statement.
“The Sivanthipatti tank and grasslands round it assist numerous natural world. The district administration ought to shield your entire website,” stated Mr. Mathivanan.
The numbers had been much less this yr as heavy rains in January resulted in overflowing of virtually all irrigation tanks within the three districts. As an illustration, Tirunelveli district acquired 350 mm rainfall in January. With the vast majority of the tanks that had been lined in census brimming with water, the birds flew to the tanks with much less water, however weren’t lined within the census plan. For the reason that depth of water even within the periphery of the tanks can also be excessive, only a few birds might be seen close to the shoreline.
“A lot of the tanks we visited stay polluted. There have been rubbish, liquor bottles, plastic sachets, use-and-throw plastic objects and previous garments which had been discarded after a holy dip. The Venthankulam tank, which was desilted by a citizen group forward of 2019 northeast monsoon and consequently attracted a lot of birds even for breeding final yr, has been significantly polluted. It has change into a hangout for anti-social parts at evening. The tank can also be used for open defecation by passengers coming to the just lately created non permanent bus terminus,” stated Mr. Mathivanan.