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17 September 2014
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Estuaries | Swale Estuary

Bird's eye views

Swale Estuary

The Swale Estuary is a 13 mile channel that separates the Isle of Sheppey from the mainland of Kent.

The estuary lies between two other great estuaries - the Medway and the Thames, and it's a birders' paradise.

Winter wonderland for birds


In common with most estuaries, this is an environment of continual change with a complex eco-system.

The mix of fresh water and sea water together with tidal movement make this a great place for wildlife watching.

Bird's eye view

Redshank (Image c/o Andy Hay and RSPB Images)Oare Marshes nature reserve on the south bank of the Swale Estuary is one of the best places to get close to some stunning bird life in the winter.

The reserve is of international importance for migratory, overwintering and breeding wetland birds.

Run by Kent Wildlife Trust, the sheltered grazing marshes with freshwater dykes, and mud flats provide a great habitat.

Winter is a good time to look for birds such as Snipes, Redshanks, Curlews and Bitterns.

One of the best things about Oare Marshes is that visitors can get a superb bird's eye view of the wildlife - you don't even need binoculars.

Watching waders

Lapwing (Image c/o RSPB Images and Chris Gomersall)During the day when the tide is lower, waders such as Lapwings can be seen feeding on the mud flats of the estuary.

Watch how they wobble their legs in the mud to disturb invertebrates.
During high tide, the lapwings move to the grass on the edge of these areas to roost and preen themselves.

Another bird to look out form is the Teal. They are easily spotted upending in the water, looking for food.

Teals have an appetite for seeds, roots and shoots as well as some aquatic insects.

Even in January you can sometimes see some of these birds thinking of pairing up.

Watch carefully and you'll see the drakes sticking their heads up and out, rustling their tail feathers, and showing off their rump patch.

Isle of Sheppey

Marsh Harrier (Image c/o RSPB Images) Over there on the other side of the estuary is the Isle of Sheppey.

This provides a very different habitat - it's much more of a wilderness area.

As a result it's is one of the best places to see a large variety of birds of prey in winter.

Although it's harder to get close to the birds on Sheppey, the island's mixture of arable farmland, grazing land and reed beds makes it a mecca for birds of prey.

Amongst the birds to look out for are Marsh Harriers, Hen Harriers, Short Eared Owls, Merlins, Kestrels and Peregrines.

A good place to see them is Capel Fleet viewing point owned by the RSPB.

Look out for March Harriers flying low and slowly over the reeds looking for prey.

This enigmatic bird is recovering from near extinction due to the draining of their wetland homes.

Their numbers dropped to just one pair in 1971, but the population is now rising again with about 200 nationwide.

Some of the Marsh Harriers breed at Sheppey, but are also joined by harriers form Scandinavia and eastern Europe.

Also look out for Peregrines which like to take advantage of the wintering wildfowl and waders.

Small mammals and predators

OwlThe grass in the fields around the RSPB reserve is kept long because this provides small mammals such as Field Voles with cover as they move about.

The Field Voles are a popular source of food for birds of prey such as Short Eared Owls, Kestrels and Harriers.

Birds of prey have claws which are different from other birds - they are designed to pluck and pull prey to pieces.

The inside front claws are used as a fork, with the beak acting as a knife.

There is a notch on their beaks to break through bones, and they usually carry food in their feet.

Owls catch prey in their feet and carry it in mouth - they have big throats so they can swallow prey whole.

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