The main objectives of this research were to study species diversity, abundance, status, threaten status and making birding activity calendar along mangrove nature trail in Bangkaew Sub-District, Meuang District, Samut Songkhram Province, Thailand. The data was carried out by field survey of bird species diversity and feeding behavior from October 2014 – September 2015. The distance of the survey was 2 kilometer long and closed to inner gulf of Thailand. The birding sites in this survey consisted of mangrove, mudflat and natural shrimp ponds.9 orders 30 families 79 species of birds were found along mangrove nature trail. 27 bird species in order Charadriiformes were found the most. 39 species of birds were found the most in mudflat. According to feeding behavior,there were 23 insectivorous birds, 22 aquatic, benthic invertebrate birds, 21 piscivorous birds, 6 granivorous birds, 3 frugivorous birds, 2 carnivorous birds and 2 omnivorous birds. According to abundance of birds, 6 bird species were in level 5 of bird abundance.It was 7.60 % of all bird species. According to group of migratorybirds,there were 21 shore birds, 4 sea birds, 4 terrestrial birds, 2 predator birds and 1 wadering bird. According to Global Threat Status,Eastern Black-tailed Godwit, Bar-tailed Godwit, Eurasian Curlew, Curlew Sandpiper, Grey-tailed Tattler and Red-necked Stintwere near-threatened (NT). According to birding activity calendar, resident birds can be watched all year round and migratory birds, especially, shorebirds can be watched during September – May.So migratory birds are indicators of richness of bio-resources. The area where lot of migratory birds foraging, is also useful for the living of the communities in the area.

Keywords:Bird species diversity,bird abundance, mangrove nature trail, Samut Songkhram