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Marsh Harrier

[Click the name of the species to go to the main information page for this species.]
Common Name Marsh Harrier
Scientific Name Circus aeruginosus
Status Restricted
Interest Level
Related Species Harriers, hawks and buzzards
Flower Visible
  • 01 - January
  • 02 - February
  • 03 - March
  • 04 - April
  • 05 - May
Look for A large bird gliding over reed beds looking for prey
Habitat Reference

Once an occassional winter visitor to Dorset but now a species nesting in the county



Contributors to the Nature of Dorset have seen this species at these locations:

Please note that the markers show APPROXIMATE locations of the observation, not exact locations! You can find often find out more information about location by looking at the original tweet. Click on any marker to see the name of the location and then click on the location name to see more details about the site where available.

This chart shows the number of records per site for this species. Hover over any column to see the site and the number of records:

This chart shows the number of records per month for this species where there are records (see note below):

The intention of this chart is to show which months during the year this species is most likely to be seen. The total per month is across all years; to see the total for a particular year select that year in the filter at the top.

This chart shows the number of records per day for this species for up to the last 30 days for which there are records for this species (see note above). Hover over any column to see the date and the number of records:

These are some photographs of this species that have accompanied tweets from Twitter contributors. Click/tap a photo to see the original version.

Displaying 1 - 12 of 13
Marsh Harrier, Radipole RSPB, 20-01-17
Tweet Date:
22/01/2017 - 06:45
Contributed By:

Displaying Marsh Harrier at Radipole Lake yesterday.

Tweet Date:
21/01/2017 - 14:30
Contributed By:

Shame about the depth of field but close up of the Marsh Harriers displaying today at Radipole Lake.

Tweet Date:
22/01/2017 - 20:00
Contributed By:
Marsh Harrier, with light behind, at Lytchett Bay this morning
Tweet Date:
17/02/2017 - 20:45
Contributed By:
Marsh Harrier at RSPB Radipole Lake 07-03-17
Tweet Date:
09/03/2017 - 06:30
Contributed By:
A Handsome Chap. Marsh Harrier - Radipole, Weymouth @RSPBWeymouth @DorsetWildlife
Tweet Date:
18/05/2017 - 23:00
Contributed By:
Male Marsh Harrier from the New Screen RSPB Radipole. 07-06-17
Tweet Date:
08/06/2017 - 08:00
Contributed By:
RT @lookin4spoonies: @PortlandBirdObs Juv. Marsh Harrier again at 16:46hrs and then lost back north up the island
Tweet Date:
28/08/2017 - 17:20
Contributed By:

The Marsh Harrier taking a rest from hunting #LytchettFields

Tweet Date:
03/10/2017 - 18:11
Contributed By:

1 of 2 Marsh Harriers present at Lodmoor yesterday - Weymouth, Dorset @RSPBWeymouth @DorsetWildlife

Tweet Date:
06/11/2017 - 17:56
Contributed By:

Some reasonable views of the Marsh Harriers too. Radipole - Weymouth, Dorset @RSPBWeymouth @DorsetWildlife

Tweet Date:
20/11/2017 - 21:22
Contributed By:

Marsh Harrier (m) - Radipole, Weymouth, Dorset Adult female also present. @RSPBWeymouth @DorsetWildlife

Tweet Date:
28/01/2018 - 21:57
Contributed By:


The original tweets from which these records have been derived:

You can use the filters to select tweets for this species at a specific location, from a specific contributor and for any month and/or year. You can use these filters individually or in conjunction with each other.

Displaying 1 - 50 of 50
Record Datesort ascending Recorded at Recorded by Tweet
19/02/2018 - 13:00 Ian Ballam

Marsh Harrier heading towards #LytchettFields from the bay @harbourbirds @NarwhalSh @DorsetBirdClub

17/02/2018 - 12:44 Mike Morse

A bit of a sad morning. It started so well too with the 2w Glauc that's been around since Monday, a Marsh Harrier o…

13/02/2018 - 20:09 Retweet

RT @AlanMembury: A visit to RSPB Radipole this afternoon. Bitterly cold wind but good views of Marsh Harrier with 3 seen at one time. #RSP…

13/02/2018 - 09:12 Luke Phillips

No sign of @Joe_stockwell 's Kumlien's Gull in the last hour... A few Marsh Harriers and a Bittern to keep the inte…

11/02/2018 - 16:38 Frank Gardener

Marsh Harrier, Sparrow Hawk, Buzzard, Goldcrests, and a flock of Redwing, Tadnoll Scrape hide.

11/02/2018 - 15:26 Shaun Robson

#LytchettBay #WeBS 4 Spoonbill, Hen & Marsh Harrier and Water Pipit between @hoopoe2016te and I. @ianballam @harbourbirds @DorsetBirdClub

10/02/2018 - 09:53 Gerry Shilham

@DorsetBirdClub @RSPBWeymouth @NatureofDorset Marsh Harrier and Little Grebe at Radipole yesterday morning.

08/02/2018 - 18:13 Peter Hadrill

6 Hen Harriers roosting again tonight, split 4:2 between 2 sites. 3G & 3B. Also 4 Marsh Harriers nearby + 2 Merlins…

07/02/2018 - 16:41 Ian Ballam

RT @johnbronze1: Studland Dorset: 4 Black necked grebes at the ferry. 2 Sandwich Terns and a female Mrsh Harriet at Little Sea.

07/02/2018 - 15:25 RSPB Arne

Could get used to this lovely winter sunshine!! Hen & Marsh Harrier, Merlin, 30 Spoonbill, Firecrest, Redpoll all f…

06/02/2018 - 22:00 Mark Wright

Marsh Harrier - Distant Poole Harbour Dorset @harbourbirds @DorsetWildlife

06/02/2018 - 11:46 Ian Ballam

2 Marsh Harriers circling over Lytchett Bay, seen from Lytchett Heath @harbourbirds @NarwhalSh @DorsetBirdClub

05/02/2018 - 12:30 RSPB Weymouth

Bearded tits, 3 Marsh Harriers and a Sparrowhawk, all in the space of an hours walk at #Radipole

05/02/2018 - 11:37 Justin Tunstall

Marsh Harrier later headed east to West Bex. @Bexbirder

30/01/2018 - 12:48 Retweet

RT @DavidMorphew: Gorgeous day at RSPB Radipole Lake 2 marsh harrier ♀from the viewing screen @RSPBWeymouth

28/01/2018 - 21:57 Mark Wright

Marsh Harrier (m) - Radipole, Weymouth, Dorset Adult female also present. @RSPBWeymouth @DorsetWildlife

26/01/2018 - 17:30 Luke Phillips

#RSPBRadipole very pleasant this evening - 22+ Little Egret into roost, 3 Marsh Harrier (2🚹 + 1🚺), 4 Water Pipit an…

22/01/2018 - 13:03 Joe Stockwell

Also Holton Lee; 2 Woodlark, Green Sand, Greenshank, 45 Siskin, 5 Lesser Redpoll, Marsh Harrier @harbourbirds

19/01/2018 - 19:30 Birds Poole Harbour

In Poole Harbour west 1 Male Hen Harrier, 4-5 Marsh Harrier, c1000 Black-tailed Godwit, 2 Kestrel and a really anno…

19/01/2018 - 18:20 Martin Adlam

Lodmoor RSPB Reserve - This afternoon 1 Spoonbill, 1 Greater Scaup, 1 Marsh Harrier, Black-tailed Godwit, Kingfishe…

17/01/2018 - 19:59 RSPB Arne

A superb Raptor Roost Watch at #RSPBArneMoors this evening, Kestrel, Buzzard, Sparrowhawk, M&F Hen harrier AND Mars…

17/01/2018 - 17:35 Paul Harris

A quick late afternoon look over Lodmoor produced Spoonbill, 3 Scaup (1♂, 2♀) and a Marsh Harrier. @DorsetBirdClub

15/01/2018 - 22:51 Mark Wright

Marsh Harrier - A little distant Holton Lee Poole Harbour, Dorset @LHoltonLee @harbourbirds @DorsetWildlife

14/01/2018 - 10:16 Paul Harris

Another Marsh Harrier at Rodden Hive, this one a female. Ringtail Hen Harrier also seen heading towards…

13/01/2018 - 09:35 Paul Harris

Stunning male Marsh Harrier at Rodden Hive. 2 Merlin hunting together on Chesil Beach.

09/01/2018 - 15:45 Nicky Hoar

Marsh harrier + spectacular wader flypast @ Lytchett Bay today thanks @NarwhalSh for a fantastic morning + helping…

09/01/2018 - 11:05 Ian Ballam

2 Marsh Harrier around Lytchett, 8+ Beardies, 3+ Rock Pipit and 57 Brent @harbourbirds @NarwhalSh @DorsetBirdClub

08/01/2018 - 08:39 Ian Ballam

Marsh Harrier over Otter Island ,Lytchett Bay @harbourbirds @NarwhalSh @DorsetBirdClub

07/01/2018 - 10:43 Paul Harris

Rodden Hive: Marsh Harrier (hunting a drake Pintail), Knot, 38 Redshank, Kingfisher, Chiffchaff.

01/01/2018 - 18:39 Peter Hadrill

Marsh H m to f food transfer late today though not holding my breath just yet after 2017`s non-event. 3 Hen Hs. Rip…

31/12/2017 - 21:28 Ian Ballam

Peregrine and Marsh harrier around #LytchettFields today

31/12/2017 - 11:27 Ian Ballam

Peregrine now hassling the Avocet in bay and Marsh Harrier quartering #lytchettFields @harbourbirds @NarwhalSh @DorsetBirdClub

30/12/2017 - 16:47 RSPB Arne

Multiple Hen Harrier sightings today (at least 2 ringtail) plus 16 Spoonbill, 3 Firecrest, Marsh Harrier, Peregrine…

28/12/2017 - 18:38 Two Owls Birding

It was great to get out birding after 7 weeks thanks @RSPBArne using their Tramper, with Marsh Harriers, GW Egret,…

20/12/2017 - 19:30 David Faulkner

RT @Faulkner2David: Yesterday at Radipole Lake including two Marsh Harriers @Natures_Voice @RSPBWeymouth @Matt_Pinner @Steve_Hogan_ @CHOG_…

20/12/2017 - 17:21 Peter Hadrill

Dusk at the West End of the Harbour tonight produced 3 Hen Hs, 5 Marsh Hs, 1 Merlin & 2 groups of Starlings heading…

13/12/2017 - 09:30 Ian Ballam

2 Marsh Harrier in dispute over Otter Island, at least 1 Water Pipit in with large Mipit flock in Pools Field and m…

06/12/2017 - 10:57 Barbara Bisset

11am Discover Arne Walk Coombe Viewpoint 2 GWE, c 200 lapwing, c 400 avocet 2 m harrier, 7 great crested grebe @RSPBArne @harbourbirds

02/12/2017 - 18:52 Phyl England

Marsh Harrier at Middlebere today .Very good for raptors,both male and female Marsh Harriers,ringtail Hen Harrier a…

02/12/2017 - 15:36 Mike Morse

Al Barrett had a few good birds at Bex this morning including a ring-tail Hen Harrier (east of car park), Marsh Har…

01/12/2017 - 16:49 Peter Hadrill

Good to see a flock of c250 Avocet in Wareham Channel this am. Also m & f Hen H and 4 Marsh H skirting the Moors survey team. @harbourbirds

29/11/2017 - 16:25 Ian Ballam

With the Hen Harrier , Marsh Harrier and Peregrine around this morning the Middlebere Avocet spent a fair bit of ti…

20/11/2017 - 21:22 Mark Wright

Some reasonable views of the Marsh Harriers too. Radipole - Weymouth, Dorset @RSPBWeymouth @DorsetWildlife

17/11/2017 - 12:09 RSPB Weymouth

The sun is shining at #RSPBLodmoor ! highlights today, marsh harrier, kestral, kingfisher, large no. of snipe and l…

10/11/2017 - 09:10 Ian Ballam

Marsh Harrier just taken prey to left of Middlebere hide & now eating it on bank in front of Osprey Pole, also Ring…

07/11/2017 - 08:34 Ian Ballam

Merlin and Peregrine interacting, watched from Lytchett Bay View, also Marsh Harrier and Sprawk @harbourbirds @NarwhalSh @DorsetBirdClub

06/11/2017 - 17:56 Mark Wright

1 of 2 Marsh Harriers present at Lodmoor yesterday - Weymouth, Dorset @RSPBWeymouth @DorsetWildlife

06/11/2017 - 12:47 Ian Ballam

Marsh Harrier hunting I'm Reedbed by end of FP12 Lytchett Bay @harbourbirds @NarwhalSh @DorsetBirdClub

06/11/2017 - 12:36 Birds Poole Harbour

1 GW Egret, 4 Goosander, 8 G'eye, c100 RB Merg, c75 GC Grebe, 4 Marsh Harr, 2 Merlin, 50+ Spoony from survey boat this AM @DorsetBirdClub

05/11/2017 - 13:24 David Foster

Avocet 400+, Lapwing 140+, Brent 40+ & Marsh Harrier highlights @RSPBArne Middlebere this am. @harbourbirds @DorsetBirdClub @NatureofDorset