On Intuitionistic Fuzzy Relations

Abstract :

Shorebirds are migrants and migrate thousands of kilometers for feeding and breeding annually. The Point Calimere Wildlife Sanctuary is one of the seasonal feeding or wintering grounds in southern part of India, which is acting as an Australasian migratory flyway route for the migratory shorebirds. The migratory shorebirds were counted by total count method and 7’×50" field binocular and 20 x 60 field spotting scope was used for bird counting. Twenty two species of migratory shorebirds were recorded from August 2014 to April 2015. Out of 22 species of migratory bird species, one species, Euresian Curlew (Numenius arquata), is under ‘Near Threatened’ category and another species, Great Knot (Calidris tenuirostris), is under ‘Endangered’ category as per the IUCN, 2016. The density, diversity and richness of the bird species showed significant variations among the seasons and months (P<0.001). The present study suggests that Point Calimere Wildlife Sanctuary is one of the important feeding grounds for the migratory and the resident species of the water birds seasonally including endangered migratory species.