Michael Quinton / Frozen lake in Copper Glacier, Alaska

Tim Fitzharris / Red Mountain, Gray Copper Gulch, Colorado

Tim Fitzharris / Red Mountain gets its color from iron ore in the rock, Gray Copper Gulch, Colorado

Tim Fitzharris / Red Mountain gets it color from iron ore in rock, Gray Copper Gulch, Colorado

Michael Durham / Western Pipistrelle (Pipistrellus hesperus) bat flying, Copper Mountains, Cabeza Prieta National Wildlife Refuge, Arizona

Michael Durham / California Leaf-nosed Bat (Macrotus californicus) flying at night, Copper Mountains, Cabeza Prieta National Wildlife Refuge, Arizona

Michael Durham / California Leaf-nosed Bat (Macrotus californicus) flying at night, Copper Mountains, Cabeza Prieta National Wildlife Refuge, Arizona

Shattil & Rozinski / Ruddy copper butterfly {Lycaena rubidus} on flower on alpine tundra, Rocky Mountain NP, Colorado, USA

Michael Quinton / Aerial view of the Copper River Delta mudflats, where each year thousands of shorebirds stop to feed and rest during their spring migration to northern breeding grounds, Alaska