Dusky Broadbill, Corydon sumatranus, UNESCO World Heritage, Kaeng Krachan National Park, Thailand

nesting broadbill dusky broadbill broadbills broadbills of thailand montane birds kaeng krachan national park corydon sumatranus passeriformes birding foraging nest birds perch bird watching wildlife branch natuaral habitat jungle conservation ornithology natural habitat nature montane forest foliage feathers black feathers tree feather tail thailand tropical diurnal national park forest eurylaimidae of asia monotypic animals wings 4k footage flying trees 4k resolution unesco eurylaimidae green world heritage bill corydon black