Great blue heron (Ardea herodias) on the banks of Firehole River in Yellowstone National Park, USA
A great blue heron on the banks of the Firehole River — a quieter wildlife encounter than the park's signature megafauna, but a reminder that Yellowstone rewards patience at any scale. © Thomas Wolf, www.foto-tw.de, CC BY-SA 3.0, via Wikimedia Commons

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