Category Archives: harriers

Springtime Fenland birdlife

After my last post, my long time blogging friend, Scott, mentioned in a comment that he was reading a book set in my part of the world, viz the fenland of East Anglia. And that reminded me that during the Covid lockdown we’ve beeen allowed to drive a few miles to exercise outdoors, and back in April I ventured over to a local fen for a walk with my camera.

The Fens are a unique ecosystem characterised by lakes, reed beds and low scrub which create habitat for a wide range of wildlife and they’re a great place to see flowers, birds, mammals and reptiles. It was a glorious sunny day when I was there and the wildlife was abundant, including this male reed bunting who posed beautifully for his portrait:

Reed bunting Ouse Fen 18 Apr 2020_3015Reed bunting (Dansk – Rørspurv, Latin – Emberiza schoeniclus)

Cuckoos (Dansk – gøg, Latin – Cuculus canorus) were cuckoo’ing all around the Fen – it’s apparently a good year for cuckoos here in the UK, and I heard one for the first time ever in the village a few weeks ago – and bittern (Dansk – rørdrum, Latin – Botaurus stellaris) were booming. The bittern is a smallish brown heron which lives and breeds in reedbeds and is extremely rare in the UK, only 191 males were recorded in the UK by the British Trust for Ornithology (BTO) in 2017. Their booming call is an amazing sound and it can carry for over a kilometre. It’s difficult to find a recording that really does it justice but if you click on the link this one hopefully gives you a good idea of what they sound like. Even though when they boom they’re very disticntive and easy to hear, they’re not easy to see unless in flight as they blend in perfectly with the background of the reedbeds. But one of these days I hope I can post one of my own pictures of a bittern to show you.

However, one bird that is easy to see is the marsh harrier:

Marsh harrier Ouse Fen 18 Apr 2020_3040Marsh harrier (Dansk – Rørhøg , Latin – Circus aeruginosus)

The marsh harrier is another one of the British birds of prey whose numbers have recovered significantly since the 1960’s presumably after the pesticide DDT was banned, and this one is a male hunting small mammals or birds over the low scrub of the fen.

The marsh harrier is a constant on the Fen, and it seems the bittern may be coming one too, which is fantastic. But the cuckoo isn’t, they’ve laid their eggs for the host species to rear and will soon be heading back on the perilous journey to the rainforests of sub-Saharan west Africa, hopefully to return to the UK next year to fill the spring air with their wonderfully distinctive call.

Rainham Marshes

Normally when I head out into the wilds I like to get to somewhere where there is little or no evidence of humans, my benchmark for a good place is  the complete absence of human noise. And that’s not usually easy to do. But on this trip back in December I found myself in a place that was everything I’d normally avoid!

A view across the marshes to the hill in the background which is an enormous landfill site, full of Londan’s waste

I was at the RSPB reserve at Rainham Marshes which is in that part of estuary Essex I’d only normally visit if I had to, but apart from that it was bordered by industry on one side, landfill on another, a motorway and the Eurostar trainline on the third side and the River Thames providing the boundary on the fourth, southern, edge. But despite my original prejudice it turned out to be a brilliant place to see some great wildlife and bizarrely it was actually enhanced by the hubbub going on all around.

Stonechat (Saxicola rubicola, Dansk: sortstrubet bynkefugl)

On entering the reserve, just beyond the visitor centre a male stonechat was perched on a twig close by, and I like stonechats – they’re very smart birds – so I took it as a good omen that I would see lots more wildlife. And the little guy was indeed a harbinger of things to come. Despite its green conservation status and being a resident in the UK, I don’t see stonechats very often, so I was pleased to see this one so close by.

The terrain at Rainham is interesting. It’s a combination of marshy reedbeds, small lakes, grassy scrub and in the middle is a disused military shooting range which I think dates back to the world wars. But altogether it’s a little oasis of wilderness in the midst of the industrial devastation that dominates this part of the Thames estuary to the east of London.

Reeds, wigeon, lake, lapwing and in the distance a marsh harrier perched on a fence with an oil storage facility in the background

The marsh harrier (Circus aeruginosus, Dansk: rørhøg) is a magnificent bird of prey which I see fairly frequently as they quarter the low lying fenland that prevails to the north and east of Cambridge and the occasional one drifts through over the fields where I live, and here was a female showing her prominent golden crown, hunting over the marshes at Rainham. This species of harrier is another bird of prey which was virtually driven to extinction in the UK but has recovered in the last 40 years, presumably as the use of DDT ceased. And in the foreground on the island in the lake were wigeon (Anas penelope, Dansk: pibeand), lapwing (Vanellus vanellus, Dansk vibe) an unidentified gull and what I think may be starlings.

The lapwing take flight in  front of a pair of huge wind turbines

May be there were so many species and numbers here because they were hemmed in to a small area of suitable habitat, but further east along the estuary, deeper into Essex, there are huge areas of tidal mudflats on the Thames and other river estuaries, so this could be the western extremes of that expanse of habitat. Either way, the diversity of the birdlife here on the marshes was remarkable.

A male shoveller looking resplendent and with that enormous beak to the fore

I said further back up this post that the southern boundary of the reserve is the river Thames, and to make the point, beyond the dyke which provided protection from the coastal tides of the river, a ship headed out to sea…


It really is a diverse and fascinating place! And somewhere I’m hoping to visit again before the winter is over.