Two individuals on the concrete railing of the pier then they fly away

brownheaded gull seagull laridae laridae of asia gulls larus seagulls pier seabirds seagulls feeding migratory wildlife in asia ornithologist perching waders birds charadriiformes wildlife birds of thailand ornithology bird watching skimmers preening sea white feathers railing lari flying chroicocephalus brunnicephalus feeding chroicocephalus bird droppings nature bang pu animals white red feet samut prakan feathers wild animals afternoon droppings ripples bill reflection sunset gray poop bang pu recreation center