Flock waiting for the sun to set, Thick-billed Green Pigeon Treron curvirostra, Kaeng Krachan National Park, Thailand

branches branch tree birds ornithology silhouette perch wild birds nest nestlings birding fledgling serilophus lunatus wildlife nesting bird watching columbiformes southeast asia nature nepal columbidae pigeons evening subtropical mountain national park bill treron curvirostra bare dusk rainforest feathers thickbilled green pigeon kaeng krachan afternoon malaysia jungle animals sanctuary indonesia wings unesco feeding treron thailand natural habitat world heritage philippines tropical