THE STUDY ON SPECIES DIVERSITY, SEASONAL STATUS AND SIMILARITY OF BIRDS IN SALT FIELD AREAS IN BANG KAEW SUB-DISTRICT, MUANG DISTRICT, SAMUT SONGKHARM PROVINCE AND BAN PAK TALAY SUBDISTRICT, BAN LAEM DISTRICT, PHETCHABURI PROVINCE
The main objectives of this research were to study species diversity, seasonal status, and similarity of birds in research areas to make the map of species diversity of migratory birds with geographic information system in research areas. The data was carried out by field survey in two salt field areas from October 2018 – December 2018. The data were analyzed to find out the similarity and study seasonal status of birds. The result of this research found that 6 orders, 11 families and 42 species of birds were found in two salt field areas. The maximum number of bird species of 29 were found in order Charadriiformes. Six orders, 9 families 26 species of birds were found in salt field areas in Bang Kaew Sub-district, Muang District, Samut Songkram Province and 4 orders, 9 families 36 species of birds were found in salt field areas in Ban Pak Talay, Pak Talay Sub-district, Ban Laem District, Phetchaburi. According to bird seasonal status, in salt field areas of Bang Kaew Sub-district, Muang District, Samut Songkhram Province, there were 4 resident birds, 18 migratory birds and 4 resident and migratory birds. In salt field areas in Ban Pak Talay, Pak Talay Sub-district, Ban Laem District, Phetchaburi, there were 4 resident birds, 27 migratory birds and 5 resident and migratory birds. According to bird similarity, similarity index between 2 salt field areas was 0.645. For making the map of species diversity of migratory birds, the maximum species of shorebirds which foraged for invertebrates in water- evaporated-field and sub-water- evaporated-field were found in salt field areas. So, salt field areas of Bang Kaew Sub-district, Muang District, Samut Songkhram Province can be developed for being birding sites in local community’s eco-tourism and knowledge center as the salt field areas in Ban Pak Talay, Pak Talay Sub-district, Ban Laem District, Phetchaburi Province because the birds are as indicators of natural balance and richness of foods in ecosystem.