Ashley Cooper / Needle ice on Holly leaves (Ilex europaeus) in a woodland in Ambleside Cumbria UK. December 2008

Todd Mintz / Great horned owlet (Bubo virginianus) talons Regina, Saskatchewan, Canada. June 2013.

Pascal Tordeux / Aerial view of large rock formations, Goreme, Cappadocia, Turkey, March.

Ole Jorgen Liodden / Blue-footed booby (Sula nebouxii exisa) displaying, Galapagos Islands.

Stephen Dalton / Close-up of holly leaf (Ilex aquifolium).

Markus Varesvuo / Bar-tailed godwit (Limosa lapponica) in flight over water, Hanko, Finland, September

Chris & Monique Fallows / Indo Pacific Sailfish (Istiophorus platypterus) feeding on sardines, Isla Mujeres, Mexico.

Diane McAllister,Diane McAllister / Japanese Macaque (Macaca fuscata) juvenile standing up with feet pointed inward, Jigokudani, Japan, January

Rolf Nussbaumer / Detail of Pointed Phlox (Phlox cuspidata) flower, Fennessey Ranch, Refugio, Corpus Christi, Coastal Bend, Texas Coast, USA

Tim Fitzharris / Pointed Phlox (Phlox cuspidata) and Indian Paintbrushes (Castilleja miniata) in bloom, Hill Country, Texas

Tim Fitzharris / Gaillardia, coreopsis and pointed phlox, blowing in the wind, Texas

Ann & Steve Toon / Blue flax (Heliophila coronopifolia), Namaqualand, Northern Cape, South Africa