Bernard Castelein / Purple Moor-grass (Molinia caerulea) tussock in grassland, on misty morning. Klein Schietveld, Brasschaat, Belgium. August 2019.

Bernard Castelein / Cloudy sky reflected in water, Purple moor-grass (Molinia caerulea) tussocks inundated with water. Klein Schietveld, Brasschaat, Belgium. March 2019.

Bernard Castelein / Tussocks and trees reflected in water on misty morning. Klein Schietveld, Brasschaat, Belgium. April 2018.

Bernard Castelein / Deergrass (Trichophorum cespitosum) amongst Cross-leaved heath (Erica tetralix), heathland at dawn. Groot Schietveld, Wuustwezel, Belgium. June 2015.

Bernard Castelein / Frozen pond with encroaching trees and tussocks. Peerdsbos, Brasschaat, Belgium. January.

Ingo Arndt / Puma (Puma concolor) camouflaged amongst vegetation tussocks. Torres del Paine, Patagonia, Chile. July.

Angelo Gandolfi / Freshwater pool in rock. Chapada dos Veadeiros National Park, Vale de Lua, Goias, Brazil.

Juan Carlos Munoz / Iberian ibex (Capra pyrenaica) on rocky clifftop, two headbutting one another. Maro-Cerro Gordo Cliffs Natural Area, Granada, Andalusia, Spain. January 2018.

Tony Heald / Antarctic fur seal (Arctocephalus gazella) resting on tussock grass, scratching nose. King penguin (Aptenodytes patagonicus) colony in background. Gold Habour, South Georgia. October 2017.

Tony Heald / Brown skua (Stercorarius antarcticus) resting on tussock grass. Right Whale Bay, South Georgia. September.

Hougaard Malan / Landscape view of NamibRand Nature Reserve sand dunes with tussocks of grass, Namib Desert, Namibia, March 2012. (non-ex)

Roger Powell / Common snipe (Gallinago gallinago) on tussock, Cresswell, Druridge Bay, Northumberland, UK, March.

SCOTLAND: The Big Picture / Dawn mist in Abernethy Forest with lots of spider webs in grass, Cairngorms National Park, Scotland, UK, August.

Brent Stephenson / Antarctic fur seal (Arctocephalus gazella) pup suckling from its mother amongst tussocks, Prion Island, South Georgia, South Atlantic, January.

Brent Stephenson / Immature Wandering albatross (Diomedea exulans) flying low over tussocks as it comes in to land, Prion Island, South Georgia, South Atlantic, January. Vulnerable species.

Brent Stephenson / Turkey vulture (Cathartes aura) on cliff amongst tussocks, Gypsy Cove, Falkland Islands, South Atlantic, January.

Brent Stephenson / Balsam bog (Bolax gummifera) and Diddle-dee (Empetrum rubrum) growing amongst tussocks on quartzite rock, Gypsy Cove, Falkland Islands, South Atlantic, January.

Chris Mattison / Pampas landscape with tussocks of grass, Patagonia, Chile.

Tim Laman / Antarctic fur seal (Arctocephalus gazella) pup resting on tussock grass, Godthul, South Georgia.

Mike Potts / Royal albatross (Diomedea epomophora) on nest brooding young chick. Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) on nest brooding young chick. Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) with single young chick, 7-10 days old. Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) on nest brooding young chick. Campbell Island, New Zealand, March.

Mike Potts / Group of Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) brooding small chick. Campbell Island, New Zealand, March.

Mike Potts / Group of Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) on nest brooding young chick. Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Group of Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) sub adults 'gamming' (courtship behaviour). Campbell Island, New Zealand, March.

Mike Potts / Royal albatross (Diomedea epomophora) in flight over nesting habitat. Campbell Island, New Zealand, March.

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

Brent Stephenson / Adult female Antipodes Island parakeet (Cyanoramphus unicolor) in fresh plumage, standing on a rock with tussocks in the background. Auckland Zoo, Auckland, New Zealand, February. Captive, Vulnerable...

Fabrice Cahez / Brown Hare (Lepus europaeus) sitting near grass tussocks, Vosges, France, July.

Andy Trowbridge / Light playing on the Lindis Pass tussocks covered hills and valleys. Lindis Pass is part of the Lindis Conservation Area, Hawea and Ahuriti Conservation Parks. This region is possibly New Zealand's be...

Juan Manuel Borrero / Mossy tussocks in a fir wood in Aigüestortes National Park, Lérida, Spain

Juan Manuel Borrero / Mossy tussocks in a fir wood in Aigüestortes National Park, Lérida, Spain

Juergen Freund / Tussocks of spiky spinifex grass covering the stoney red ground of the Pilbara Region, Karijini NP, Western Australia.

Niall Benvie / Moorland at Loch Gruinart RSBP reserve, Islay, Argyll, Scotland

Peter Scoones / Coastal scenery of South Georgia, South Atlantic Islands

Pete Oxford / Snow covered grass tussocks, Altiplano, Bolivia

Gertrud & Helmut Denzau / Tussocks of permafrost next to water, Tibetan plateau, Ladakh, North East India

Nigel Cattlin / Vapourer / rusty tussock moth (Orgyia antiqua) caterpillar on a damaged rose leaf, Berkshire, June

Hanne & Jens Eriksen / Light mantled sooty albatross in tussocks {Phoebetria palpebrata} South Georgia

Brian Bevan / Tracking shot of Common pheasant (Phasianus colchicus) male walking through frosty meadow and jumping on tussock, before jumping off and pecking at ground, Bedfordshire, UK.

Brian Bevan / Green woodpecker (Picus viridis) juvenile perched on tussock in meadow, Bedfordshire, UK.

Brian Bevan / Green woodpecker (Picus viridis) juvenile pecking at tussock and feeding on ants, Bedfordshire, UK.

Shane Gross / Antarctic fur seal (Arctocephalus gazella) in tussock grass, Gold Harbor, South Georgia Island.

Shane Gross / Antarctic fur seal (Arctocephalus gazella) in tussock grass, Gold Harbor, South Georgia Island.

John Waters / Fulmar (Fulmarus glacialis) pair huddled together at nesting site, with tussocks of Sea pinks (Armeria maritima) and a perched Puffin (Fratercula arctica) in background, Orkney, Scotland, UK, May.

Jussi Murtosaari / Ruff (Calidris pugnax) pair on tussocks surrounded by water. Liminka, Finland. May.

Bernard Castelein / Fen at dawn. Klein Schietveld, Brasschaat, Belgium. April 2020.

Bernard Castelein / Tussocks reflected in misty fen at dawn. Klein Schietveld, Brasschaat, Belgium. April 2020.

Doug Gimesy / Southern royal albatross (Diomedea epomophora) sitting on nest between Grass (Poa sp) tussocks. Campbell Island, Southern Ocean, Subantarctic New Zealand. December 2014.