A pair of Marsh Harrier siblings in the nest after a heavy rain shower.
© Photo by Andrew Parkinson/2020VISION

Marsh Harrier

Circus aeruginosus

Marsh harriers nest in large reedbeds where they feed on frogs, small mammals and birds, such as moorhen and coot. Once very rare, they have recently spread from their stronghold in East Anglia to other parts of the country where large reedbeds are found.

© Photo by Andrew Parkinson/2020VISION

Marsh Harriers are migrant birds, arriving here to breed in April with most leaving in September and October to winter in Africa. During the breeding season, males perform amazing courtship displays, wheeling at great heights then diving towards the ground while performing a series of tumbles; sometimes the female will join him and they’ll lock talons mid-air.

How to Identify

The largest of the harriers, marsh harriers create a distinctive V-shape in the air by holding their wings up. Females are chocolate-brown with a golden-yellow crown and throat. Males have a brown back, gingery belly, pale head and neck and long grey wings with black tips.

Where to Find

Nests in East Anglia, South East England, the Somerset Levels and parts of North West England.

How People Can Help

Marsh harriers were severely persecuted in the past for taking game species. Coupled with widespread damage to their wetland habitats, they suffered massive declines in the 18th and 19th centuries. Thankfully, numbers of this beautiful species are beginning to increase gain. To ensure they have continued success, The Wildlife Trusts work closely with farmers and landowners to promote wildlife-friendly practices. We are working towards a ‘Living Landscape’: a network of habitats and wildlife corridors across town and country which are good for both wildlife and people. You can support this greener vision for the future by joining your local Wildlife Trust.

Did you know?

In 1971 only one nesting female remained in the whole country. Today, after decades of conservation effort, there are more than 200 pairs in the UK.

Key Facts

  • Length: 48-55cm
  • Wingspan: 1.2m
  • Weight: 540-670g
  • Average lifespan: 6 years

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