Ingo Arndt / Burchell's zebra (Equus burchellii) herd grazing, Masai Mara Game Reserve, Kenya

Philippe Clement / Nimbostratus cloud covering cirrocumulus / altocumulus and blue sky

Chris Mattison / Cirrocumulus clouds

Peter Cairns / Tussocks of grass in wetland habitat in early winter, Bosque del Apache, New Mexico, USA, December 2012.

Aflo / Y-7503 Sun setting below cirrrocumulus clouds in evening sky

Aflo / Y-7502 Sunset evening sky with cirrocumulus clouds

Philippe Clement / Cirrocumulus cloud formation

Jeff Foott / Cirrocumulus clouds and Parriott Mesa, Moab, Utah