Guy Edwardes / Shore lark (Eremophila alptstris), Ontario, Canada

Marie Read / Snowy Owl (Nyctea scandiaca) female perched, Amherst Island, Ontario, Canada, January.

Guy Edwardes / Snowy owl (Bubo scandiacus) walking on ground in snow, one foot raised, Ontario, Canada, January.

Visuals Unlimited / Barred Owl (Strix varia) hunting for prey, Ontario, Canada.

Visuals Unlimited / Magnolia Warbler (Setophaga / Dendroica magnolia) male singing on a spruce branch, Ontario Canada.

Loic Poidevin / Northern oriole (Icterus galbula) female, Pointe Pelee, Ontario, Canada, May

Loic Poidevin / Yellow warbler (Dendroica petechia) at nest, Pointe Pelee, Ontario, Canada, May

Staffan Widstrand / Snowy Owl (Bubo scandiaca) in flight over snow covered landscape, Ottawa, Ontario, Canada, December

Sven Zacek / Snowy owl (Bubo scandiaca) perched on tree stump, in snow, Ontario, Canada.

Ingo Arndt / Aerial view of the "American Falls / Horseshoe Falls", Niagara Falls, North America

Ingo Arndt / Aerial view of "American Falls / Horseshoe Falls", Niagara Falls, North America

Matthias Breiter / Trees in autumn along river, Sand River, Agawa Bay, Ontario, Canada

Matthias Breiter / Forest in autumn, Algonquin Provincial Park, Ontario, Canada

Alan Murphy / Snowy Owl (Nyctea scandiaca) male flying, Ontario, Canada

Alan Murphy / Snowy Owl (Nyctea scandiaca) male flying, Ontario, Canada

Alan Murphy / Blue Jay (Cyanocitta cristata) during snowfall, Ontario, Canada

Alan Murphy / Canada Jay (Perisoreus canadensis) in light snowfall, Ontario, Canada

Alan Murphy / Blue Jay (Cyanocitta cristata), Ontario, Canada

Glenn Bartley / Eastern Whip-poor-will (Antrostomus vociferus), Ontario, Canada

Glenn Bartley / Magnolia Warbler (Setophaga magnolia) singing male, Ontario, Canada

Glenn Bartley / Barred Owl (Strix varia), Ontario, Canada

Tim Fitzharris / Lang Lake, Ontario, Canada

Matthias Breiter / Ruffed Grouse (Bonasa umbellus) male drumming, Kenora, Ontario, Canada

Gerry Ellis / Raccoon (Procyon lotor) three orphan babies, Aspen Valley, Ontario, Canada

Gerry Ellis / Red Fox (Vulpes vulpes) kit in log, Aspen Valley, Ontario, Canada

Gerry Ellis / Red Fox (Vulpes vulpes) kit in log, Aspen Valley, Ontario, Canada

Tim Fitzharris / Island in Georgian Bay, Lake Huron, Killarney Provincial Park, Ontario, Canada

Tim Fitzharris / Coastal rocks, Bruce Peninsula National Park, Ontario, Canada

Tim Fitzharris / Eastern Bluebird (Sialia sialis) male, Ontario, Canada

Guy Edwardes / Snow bunting (Plectrophenax nivalis) flock in flight, Ontario, Canada

Guy Edwardes / Snowy Owl (Bubo scandiacus) in threat posture towards another owl, Ontario, Canada

Guy Edwardes / Snowy Owl (Bubo scandiacus), Ontario, Canada

Guy Edwardes / Snow bunting (Plectrophenax nivalis) group of three in snow, Ontario, Canada, January.

Guy Edwardes / Snowy Owl (Bubo scandiacus) female on ground in snow with wings spread, Ontario, Canada

Guy Edwardes / Snowy Owl (Bubo scandiacus) female on ground in snow with wings spread, Ontario, Canada

Guy Edwardes / Snowy Owl (Bubo scandiacus) female on ground in snow with wings spread, Ontario, Canada

Guy Edwardes / Snow bunting (Plectrophenax nivalis) in flight, Ontario, Canada, January.

Marie Read / Snowy Owl (Nyctea scandiaca) female preparing to take flight from its perch on a fence, Barrie, Ontario, Canada. February.

Jo-Anne McArthur / We Animals / Activists with Compassion for Animals banner march during Veggie Pride Parade in Toronto, Canada, June 2011.

Jo-Anne McArthur / We Animals / Activists holding signs and giving out vegan sandwiches during a Toronto Pig Save demonstration. Toronto, Canada. January 2013. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Pigs in a transport truck, on route to slaughter. Toronto, Canada. October 2011. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Pigs in a transport truck, on route to slaughter. Toronto, Canada. October 2011. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Pigs in a transport truck, on route to slaughter, Toronto, Canada. October 2011. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Pig in transport truck, badly scratched and injured, Toronto, Canada. January 2014. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Activists interacting with pigs in a transport truck, on route to slaughter. Toronto, Canada, December 2012. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Pig snout at slot in a transport truck, on route to slaughter, Toronto, Canada, December 2012. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Pigs packed together in transport truck, on hot summer day. These pigs are being transported to the slaughterhouse. Toronto, Canada, August 2013. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com

Jo-Anne McArthur / We Animals / Activists holding signs at a Toronto Pig Save vigil. Toronto, Canada, August 2013. © Jo-Anne McArthur/ Toronto Pig Save / naturepl.com