David Tipling / Volunteer looking through scope at migrating Montagu's Harrier during BirdLife Malta Springwatch Camp, April 2013

Hermann Brehm / Montagu's Harrier (Circus pygargus) juvenile in flight, Germany, September

Markus Varesvuo / Montagu's Harrier (Circus pygargus) Sultanate of Oman November

Bert Willaert / Boy watching migrating raptors through binoculars, with the remnants of shot European bee eater (Merops Apiaster), Sparrowhawk (Accipiter Nisus), Montagu's harrier (Circus pygargus) and a Honey buzza...

Bert Willaert / Remnants of twelve shot Honey Buzzards (Pernis apivorus), a Montagu's Harrier (Circus pygargus) and a Black Stork (Ciconia nigra), Georgia, September 2011.

Bert Willaert / Remnants of a shot Honey buzzard (Pernis apivorus) and a Montagu's Harrier (Circus pygargus), with shotgun cartridges nearby, Georgia, September 2011.

Loic Poidevin / Montagu's harrier (Circus pygargus) perched, Vendeen Marsh, West France, July

Loic Poidevin / Montagu's harrier (Circus pygargus) perched, Vendeen Marsh, West France, July

Loic Poidevin / Montagu's harrier (Circus pygargus) perched, Vendeen Marsh, West France, July

Loic Poidevin / Montagu's harrier (Circus pygargus) on ground hunting in Vendeen Marsh, West France, July

Hanne & Jens Eriksen / Montagu's harrier (Circus pygargus) male in flight, Oman, September

Eric Medard / Western Marsh harrier (Circus aeruginosus) eating a dead Copyu / Nutria in winter, France, February

Eric Medard / Montagu's Harrier (Circus pygargus) female defecating on post, France, June

Eric Medard / Montagu's Harrier (Circus pygargus) female defecating on post, France, June

Eric Medard / Montagu's Harrier (Circus pygargus) male coughing up pellet, France, June

Eric Medard / Montagu's harrier (Circus pygargus) defecating on post, France, June

Charlie Summers / Montagu's harrier (Circus pygargus) male on ground, Serengeti National Park, Tanzania, March

Bernard Castelein / Montagu's harrier (Circus pygargus) adult female in flight, Velvadar, Gujarat, India

Bernard Castelein / Montagu's harrier (Circus pygargus) adult female, Velvadar, Gujarat, India

Bernard Castelein / Montagu's harrier (Circus pygargus) adult female, Velvadar, Gujarat, India

Bernard Castelein / Montagu's Harrier (Circus pygargus) male, Velvadar, Gujarat, India

Inaki Relanzon / Montagu's harrier (Circus pygargus) perched, Lake Bunyony, Uganda, Africa, July

Inaki Relanzon / Montagu's harrier (Circus pygargus) perched in undergrowth, Lake Bunyony, Uganda, Africa, July

Loic Poidevin / Montagu's Harrier (Circus pygargus) in flight showing underwing plumage. The Vendeen Marsh, French Atlantic Coast, May.

Loic Poidevin / Montagu's Harrier (Circus pygargus) in flight. The Vendeen Marsh, French Atlantic Coast, April.

Loic Poidevin / Montagu's Harrier (Circus pygargus) on ground. The Vendeen Marsh, France, July.

Loic Poidevin / Montagu's Harrier (Circus pygargus) on ground. The Vendeen Marsh, France, July.

Loic Poidevin / Montagu's Harrier (Circus pygargus) female on the ground. Breton Marsh, French Atlantic Coast, July.

Loic Poidevin / Montagu's Harrier (Circus pygargus) perched on post. The Vendeen Marsh, French Atlantic Coast, July.

Loic Poidevin / Montagu's Harrier (Circus pygargus) in low flight over grass seedheads. Breton Marsh, French Atlantic Coast, May.

Loic Poidevin / Montagu's Harrier (Circus pygargus) perched in long grass on a post. Breton Marsh, French Atlantic Coast, May.

Loic Poidevin / Montagu's Harrier (Circus pygargus) perched on wood. Breton Marsh, French Atlantic Coast, May.

Robin Chittenden / Montagu's harrier in flight (Circus pygargus) La Serena Steppes Badajoz Extremadura, Spain, March

Robin Chittenden / Montagu's harrier (Circus pygargus) perching on fence, La Serena Steppes Badajoz Extremadura Spain, March

Robin Chittenden / Montagu's harrier in flight (Circus pygargus) La Serena Steppes Badajoz Extremadura, Spain, March

Ole Jorgen Liodden / Montague's Harrier (Circus pygargus) in flight with rabbit kill. Netherlands, May.

Loic Poidevin / Montagu's harrier (Circus pygargus) on ground in marsh, Vendee, west France, July

Loic Poidevin / Montagu's harrier (Circus pygargus) in flight carrying prey, Vendee, west France, April

Loic Poidevin / Montagu's harrier (Circus pygargus) in flight over marsh, Vendee, France, May

Roger Powell / Montagu's Harrier (Circus pygargus) male in flight, Castro Verde, Portugal, April

Poinsignon and Hackel / Montagu's harrier {Circus pygargus} chicks and eggs in nest, Lorraine, France

Poinsignon and Hackel / Montagu's harrier {Circus pygargus} fledgling chicks at nest on ground, Lorraine, France

Wild Wonders of Europe / López / Montagu's harrier (Circus pygargus) in flight over mustard crop, Latvia, June 2009

Michael W. Richards / Montagu's harrier {Circus pygargus} Tanzania

Bjorn Forsberg / Montagu's harrier {Circus pygargus} with reptile prey, Oland, Sweden

Dietmar Nill / Montagu's harrier {Circus pygargus} male hovering, Extremadura, Spain.

Bjorn Forsberg / Montagu's harrier pair courtship display in flight {Circus pygargus} Sweden

Richard Du Toit / Montagu's harrier on ground {Circus pygargus} Chobe NP, Botswana

Bjorn Forsberg / Montagu's harrier female {Circus pygargus} Sweden

Dietmar Nill / Montagu's harriers mating {Circus pygargus} Extremadura, Spain

Bernard Castelein / Montagu's harrier (Circus pygargus) stretching. Ngorongoro, Tanzania, East Africa