A silhouette of this flock resting on bare branches just before dark, Thick-billed Green Pigeon Treron curvirostra, Kaeng Krachan National Park, Thailand

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