Four trumpeter swans (Cygnus buccinator), on the river with reflection, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

photography horizontal color image travel destinations travel yellowstone national park famous place national park usa unesco unesco world heritage site north america wyoming trumpeter swan swan water bird animal bird river water outdoors day wildlife no people four animals swimming leisure activity snow winter reflection wild animals in the wild travel destination tourist destination tourist destinations swim swims rivers outdoor outside nobody no one no person national parks public land daytime birds animals