BREEEDING CYCLE OF SELECTED WETLAND BIRDS FROM VISNAGAR, GUJARAT

Publication Date : 27/12/2016


Author(s) :

M G Patel.


Volume/Issue :
Volume 2
,
Issue 12
(12 - 2016)



Abstract :

Total 29 species of wetland birds have been studied in Visnagar, North Gujarat site. Out these, 7 species breed in this area which include 4 species of Egrets 1 species of Herons and 2 species of Ibis. Most of the species start nesting for breeding after early summer and complete before post monsoon (October). The availability of an adequate food supply was the most important ultimate factor. All the species those of recorded are piscivorous as well as insectivorous. Most of the birds require 5to 10 day to complete their nests. Maximum activated nests were observed in early rainy days. Egg laying timing required 2 to 7 days in all except White lbis. Clutch size was 1 to 4 except Ibises. Egret species required maximum incubation period (20-27 days) than, Herons and Ibises. Hatching failure, predation, egg fall and nest destruction are the measure causes for egg mortality. There was seventy percent of hatching success, Predation, nest destruction and cyclone are main factors chick mortality. The nesting period was 37 to 42 days. Most species covered nesting period within 72 to 82 days.


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