Gerrit Vyn / Adult Red-necked Grebes (Podiceps grisegena) in breeding plumage performing "whinny-braying" duet in defense of territory. Fairbanks, Alaska, USA, July.

Ingo Arndt / Arctic Ground Squirrel (Spermophilus parryii) hibernating in burrow, Fairbanks, Alaska

Ingo Arndt / Boreal forest during winter with moon near Fairbanks, Alaska

Ingo Arndt / Arctic Ground Squirrel (Spermophilus parryii) hibernating in burrow, Fairbanks, Alaska

Kevin Schafer / Aurora borealis over boreal forest, Fairbanks, Alaska

Jerry Monkman / Rainstorm lit by the midnight sun in the White Mountains, North of Fairbanks, near Circle Hot Springs, Pinnell Mountain Trail, Alaska, USA

Yva Momatiuk & John Eastcott / Quaking Aspen (Populus tremuloides) trees in autumn color, view looking up, Fairbanks, Alaska