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Vankalai Sanctuary, also known as the Mannar Bird Sanctuary, is located in the northwest of Sri Lanka in the Mannar District. This site covers an area of 4,839 ha (11,960 acres). This site covers an area of 4,839 ha (11,960 acres).
Numerous varieties of water and wader birds are found in the sanctuary including cormorants, ducks, egrets, flamingoes, herons, ibis, pelicans and storks. [1] [9] [12] The sanctuary is a haven for birds migrating along Sri Lanka's east coast. [9] Elephants are also found in the sanctuary. [13] [14]
Photographic Guide to Birds of Sri Lanka (2000) - ISBN 1-85974-511-3 [16] Sri Lanka Nature Sounds (2011) The Bird Sounds of Sri Lanka. An Identification Guide Part 1 (1997, 2nd ed. 2001) audio tape; The Bird Sounds of Sri Lanka. An Identification Guide Part 2 (1998) audio tape; The Bird Sounds of Sri Lanka. 99 Species (2003) audio CD
Another form of radio tracking that can be utilized, especially in the case of small bird migration, is the use of geolocators or "geologgers". [5] This technology utilizes a light sensor that tracks the light-level data during regular intervals in order to determine a location based on the length of the day and the time of solar noon. [ 5 ]
Sri Lanka is a tropical island situated close to the southern tip of India. The bird life of Sri Lanka is very rich for its size and more than 500 species have been recorded. In addition to the many resident birds, a considerable number of migratory species winter in the country to escape their northern breeding grounds.
From 2008, Field Ornithology Group conducts a bird count in December in the lines of Christmas Bird Count by the National Audubon Society of the United States. [5] Sri Lanka's location at the tip of the Indian subcontinent has made the island a termination point in the North-South bird migratory route. [6]