John Waters / Mixed flock of Wigeon (Anas penelope) and Northern lapwings (Vanellus vanellus) disturbed by hunting Marsh Harrier (Circus aeruginosus), Greylake RSPB Reserve, Somerset Levels, England, UK, December.

Joris van Alphen / Montagu's harrier (Circus pygargus) preparing to land at her nest, clasping a songbird. Viewed from below. Groningen, the Netherlands. July.

Alan Murphy / Northern Harrier (Circus cyaneus) female flying, Texas

Fabrice Cahez / Northern / Hen Harrier (Circus cyaneus) and Kestrel (Falco tinnunculus) below, fighting in flight. Vosges, France, February.

Hanne & Jens Eriksen / Northern harrier (Circus hudsonius) juvenile in flight. Saskatchewan, Canada, August.

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May

Alan Murphy/ BIA / Northern Harrier (Circus cyaneus) flying, Texas

Richard Du Toit / Black harrier (Circus maurus) in flight, Northern Cape Province, South Africa.

Richard Du Toit / Black harrier (Circus maurus) in flight, Northern Cape Province, South Africa.

SCOTLAND: The Big Picture / Group of people protesting to raise awareness of Hen harrier (Circus cyaneus) persecution on Grouse moors. Boat of Garten, Cairngorms National Park, Scotland, UK. August 2017.

David Tipling / Hen harrier (Circus cyaneus) female hunting over plain, Hortobagy, Hungary winter