Bare branches of a tree during a hot summer morning in Phu Khiao Wildlife Sanctuary in Thailand

bare branch branches branch nest twigs birds nestlings tree perch leaves foliage sky wildlife kaeng krachan national park nature habitat conservation 4k wildlife brood forest dry 4k resolution grassland morning light sunlight blue light animals in thailand sancturay sanctuary animals feeding natural habitat jungle khao yai unesco world heritage summer phu khiao rainforest morning kaeng krachan thailand hot