Assessing avian diversity and conservation status in Dighal Wetlands, Haryana, India
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Abstract
Birds are considered sensitive indicators of ecosystem health and functionality in freshwater wetlands. Assessment of bird
assemblages in wetland habitats is, therefore, emphasised from a sustainable management perspective. Bird surveys were conducted from October 2020 to September 2022. These surveys aimed to assess the community composition and status of avifauna in Dighal wetlands, an important bird area in the Jhajjar District of Haryana, India. Data collection employed point counts and opportunistic encounter methods. A total of 154 bird species belonging to 108 genera, 47 families, and 18 orders were recorded. Of these, 75 species were residents, 60 were winter migrants, and 10 were summer migrants. The greatest species richness was observed for the order Passeriformes (54), followed by Charadriiformes (22), Anseriformes (17), and the rest of the 15 orders. Anatidae was the most dominant family with 17 species, constituting 11% of the bird community in the study area. Data on local abundance revealed that 10 species were common, 23 were fairly common, 83 were uncommon, and 38 were rare in the study area. Among the recorded avifauna, one species is classified as Endangered, three as Vulnerable, and eight as Near Threatened in the IUCN Red List of Threatened Species; 17 species are listed in the Appendices of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES); and 11 are included in Schedule I of the Indian Wildlife (Protection) Act, 1972. These wetlands also support 40 species of birds, which have a declining population trend globally. The occurrence of migrants and species of global conservation priority underscores the importance of these wetlands as a conservation site and wintering ground for avifauna due to the extensive food resources and rich biodiversity they support. The present study provides baseline information for future research on monitoring bird assemblages and proper management of the Dighal wetlands of Haryana.
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