Nest-site selection by colonial waterbirds at Vedanthangal Waterbird Sanctuary, Tamil Nadu, India
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Nest-site selection of Little Cormorant (Phalacrocorax niger), Little Egret (Egretta garzetta), Cattle Egret (Bubulcus ibis), Grey Heron (Ardea cinerea), Asian Open-bill-Stork (Anastomus oscitans), Eurasion Spoonbill (Platalea leucorodia), Black-crowned Night Heron (Nycticorax nycticorax) and Oriental White Ibis (Threskiornis melanocephalus) was studied at Vedanthangal waterbird Sanctuary (VBS), Tamil Nadu, India. A total of 242 nests were identified. Data were collected on the nest-site variables viz., nest plant species, total number of nests on the tree, nest height from the water level and ground level, gbh of the tree species, canopy width, bole length and distance to the nearest water spread area for each bird species after successful fledging. All the above parameters were also collected for randomly selected trees without nests. Total number of nests on a tree was highly correlated with tree height, tree girth at breast height (GBH) and canopy area of the tree. In general, these colonial waterbirds selected age-old and thick canopied trees regardless of plant species in the Vedanthangal lake.
Keywords: Vedanthangal, nest-site selection, cormorant, egrets, herons, openbill stork, spoonbill, white ibis.
Citation: *, ( 2007), Nest-site selection by colonial waterbirds at Vedanthangal Waterbird Sanctuary, Tamil Nadu, India. Scientific Transactions in Environment and Technovation Journal(STET), 1(2): 77-83
Received: 2015-06-18 14:41:02; Accepted: 2015-06-18 14:41:19;
*Correspondence: unknow user, unknow user