Population Status of Birds of Shady Island in Winter and Spring in Ahvaz

Fluctuation of diversity and population composition of birds are tow bio-indicators of environmental health. For this reason diversity and population composition of birds of Shady island in Karon River in Ahwaz implemented in winter and spring 2014. Area of the park is 17 hectare and adjoin by a bridge to the west of Karon river coast. During winter and autumn we recognized 37 species of birds by telescope and binocular (10 X 40) which belonged to eighteen family. In winter 1414 individuals belong to 23 species and in spring 1036 individuals belong to 29 species counted by total count method. Average density of birds was 83 individuals in winter and 61 in spring in per hectare. Population compound of birds were Ciconiformes and Passeriformes. Most number of birds counted in January and (688 individuals belong to 27 species) lowest was in April. Ardeidae family with 5 species had highest diversity and 10 Family with one species had lowest diversity. The Egretta garzetta with 437 and Larus ridibundus with 576 individuals were dominant in the Shady island.