Tuesday, 2 February 2016

Pop goes the weasel



Chris Durdin, NWT Volunteer at Thorpe Marshes

Sometimes watching nature you need a bit of luck. The party on a winter guided walk at Thorpe Marshes was on the path by the River Yare when an alert group member noticed a mammal balanced at the very top of the dead stalks of greater willowherb. It was a weasel, but what was it doing there? Another movement caught our eyes –a mouse, also high in the wintry vegetation. We watched for only a minute or two but it seemed longer, time running slowly as the cat-and-mouse – well, weasel-and-mouse – game continued. Then the mouse dropped into the base of the vegetation and the weasel followed, and both disappeared from view. We presume it was an unhappy outcome for the mouse, but we don’t know.

Harvest mouse and weasel (photo by Derek Longe)

In the meantime, Derek Longe was taking photographs, and the picture captures the moment. Remarkably, as well as helping us to confirm that it was a weasel and not a stoat, by zooming in we discovered that it was stalking a harvest mouse. Two mammal species confirmed in the click of a shutter.

Bridge still shut: a reminder that the usual pedestrian entrance into the reserve over the railway bridge in Whitlingham Lane is shut for major repairs until the end of March. The way in on foot is along a muddy path from Bungalow Lane, farther east along Yarmouth Road, and that’s also true for guided walks.

Chris Durdin leads monthly wildlife walks at NWT Thorpe Marshes. Details of these and recent sightings on the reserve are on www.honeyguide.co.uk/thorpemarshes.htm. The website also has the 14-page NWT Thorpe Marshes Wildlife Report for 2015.

Wednesday, 27 January 2016

The Ovington Ramblers: Thetford Heath

Maureen Simmons

Breckland Thyme

Our walk today took us to Thetford Heath.  The temperature was hovering around 0 deg, but it was a bright day with some weak winter sunshine.  The vast Norfolk skies, dotted with clouds, were particularly stunning.

The trail around the heath provides a pleasant walk and is easy to follow.  It took us about an hour and a half, with lots of stops along the way to admire the scenery and investigate the tiny plants among the grassland.

We were very lucky to spot the rare Breckland Thyme, which you can see in the photo,  a tiny wonder mixed in with the moss and heather.  Unfortunately it is not in flower at this time of year, unlike the gorse – forever in flower and covered in frost!

Lichen covered the old oak trees and we found numerous patches of lichen on the ground in many beautiful colours.

Coffee back at the car was very welcome on this cold day, but we all agreed it was an excellent morning's walk.

Saturday, 23 January 2016

Ranworth in winter



Barry Madden, NWT Volunteer

Ranworth, a small and pleasant village in the heart of Broadland is a lovely place to stroll around on a bright winter’s day. I visited earlier this week savouring the blissful peace of the season. Gone now are the pleasure craft jostling for a berth at the busy staithe, the cruisers, canoes, day boats, and dinghies. Gone too are the steady stream of holidaymakers keen to take a short adventure through a freshwater swamp and visit the NWT Broads Wildlife Centre sited at the terminal point of a 500 metre Boardwalk. Gone are the screeching terns, the arrowing hobbies, the chuntering reed warblers and twittering swallows. But all is not still: a new cast of characters has moved in to take advantage of the tranquility. Birds of all kinds are using the unmolested waterways and wet woodland as a winter sanctuary; somewhere to rest and feed to survive another day. Come with me for a walk through this wildlife haven and together let’s see what we can find.

Our first stop is to search through the massed assemblage of twigs and branches forming the canopy of the swampy carr, lichen encrusted and bare of leaf. This matrix plays host to many small birds: blue, great and marsh tits busily fuss through the tangle searching tirelessly for small spiders and insects hidden from winters chill; robins, wrens and chaffinches occupy the lower tier where they root around in the undergrowth for small invertebrates, snails, and fallen seed; a few goldfinches twitter amongst themselves as they raid the topmost branches of an alder, their vibrant red faces adding a touch of the exotic. As we reach the transition from woodland to more open reed fen, blackbirds flush from a guelder rose clucking sulkily at our unwelcome intrusion. Fieldfares chuckling overhead in search of bright hawthorn berries to plunder remind us that winter has truly arrived despite the brilliance of the blue sky and the vibrant scarlet of the guelder fruits.

The open broad holds large rafts of wildfowl; showy shoveller, timid teal and grey-glossed gadwall, whilst all the time the piercing whistles of wigeon echo across the misty water. A buzzard spirals in from the south it's brown and white chequered underside catching the light from the mid afternoon sun. It drifts across the broad causing mass panic amongst the ducks and coots that take to the air on a multitude of flickering wings. But this raptor had no designs on them, it is intent only on quartering the farmland on the far side for carrion or perhaps an unlucky rabbit: easier pickings by far. A marsh harrier that appears a few minutes later is a different story and loiters with intent above the milling throng of startled water birds. It too is unlucky on this sortie and eventually moves into the distant reed beds in the hope of surprising more isolated prey.

As we stand close to the visitor centre a lone bullfinch flies above us uttering its distinctive mournful ‘phew’ and a small flock of siskins dance above the alders wittering excitedly to each other. The reason for the appearance of these hitherto well-hidden finches soon becomes clear in the form of a sparrowhawk that glides low across the channel moving silently and swiftly from one patch of scrub to another as it hunts with deadly purpose. It seemed such a short while ago that we could watch hobbies hawking dragonflies here, but their winter absence helps us to appreciate their summer presence; their return next April will be all the more welcomed for it.

The explosive song of a Cetti's warbler shakes us from our reverie and turning we catch the massed heads of dancing reeds set ablaze by the lowering sun. A dazzling spectacle and one that seems to typify this Broadland landscape; a Living Landscape of diverse habitats, fen, woodland, open water and farmland weaved together to form a rich tapestry where wildlife can find sanctuary.

Before returning home we can take a diverting stroll through the churchyard where blackbirds and songthrushes are busy gorging themselves on the berries of ancient yews. These birds, quite possibly migrants from Scandinavia or further east, swallow the berries whole allowing the nutritious succulent red flesh to be absorbed whilst the poisonous seeds pass through without being digested. They seem intent on stripping the bounteous fruits with maximum haste. Competition is fierce and they are all engaged in a race against time and each other.

But Ranworth hasn’t quite finished with us yet, for as we gaze up into a roadside ash a lovely kestrel peers down at us unafraid and unfussed. He is soaking up the last mellow rays of the afternoon sun; his rich buffs and brick reds glowing, his black eye sparkling. This bird like all others lives from day to day, unknowing of what the following dawn will bring. Today with bright blue skies and an unseasonal mildness comes relative easy living; tomorrow with bitter winds, rain and cold could come starvation.

Ranworth has done us proud and our visit at this quieter time of the year has shown real beauty and an escape, albeit temporary, from the rigours of our modern world. The wildlife is grateful for the wildness and so, I hope, are we.

All images by Barry Madden

Thursday, 21 January 2016

Close Encounters of the Owl Kind



Nick Carter,  Wetland Project Officer

I paid my first visit of the year to the Wissey Wetland on Wednesday and had an immediate surprise. As I drove down the entrance track a short-eared owl flew across in front of the vehicle. I stopped and thought I might get a decent flight image but the bird then very co-operatively landed the other side of the ditch running alongside the track. It allowed me to get very close and take some of the attached images. The bird obviously spied something flying over at one point, which I didn’t see. 

Short-eared owls have been recorded occasionally on the Methwold and Hilgay sites before but this gave the best views.  After visiting the very wet Hilgay site and checking all was ok I saw a barn owl which I wasn’t able to photograph. However the short-eared owl was still hunting around the access track quite near the entrance so I stopped to watch it. I then realised that there were two short-eared owls hunting. So a nice welcome to the site for 2016 and another surprise on leaving it.

Tuesday, 19 January 2016

The Ovington Ramblers: Hockham and Wretham



Maureen Simmons

A small group of friends (5 of us in all) have decided in our 20th year of walking together that we will try to visit all the Norfolk Wildlife Trust reserves in their 90th Anniversary year. So we braved the cold wind and showers and started out on our adventure.

Turkeytail fungus at Hockham Fen
We first went to Hockham Fen, which includes Cranberry Rough. This is quite hard to find, but we met a kind Thetford Forest Warden who pointed the way. He explained that about a thousand years ago Cranberry Rough was a huge lake, which silted up over the next 500 years and was eventually filled in. Now, however, the land is reverting to its original marshland and is the home of a variety of newts and wildfowl. Cattle graze the area in a way that supports the wildlife and benefits the ecology. We had to tread very carefully as the bogs can be very deep and dangerous. We stood and watched a buzzard overhead whilst listening to the geese honking.

We continued on to East Wretham Heath. Not many rabbits were brave enough to venture out today, but we did see a few white tails bobbing about. It's amazing to see how low they crop the grassland, helping to make the Brecks so unique, with a population of rare birds, plants and insects found virtually nowhere else in England.

Ringmere at East Wretham
We arrived at Langmere (one of the two large lakes at East Wretham) and looked out of the hide to see it completely dry – after all the rain we have had recently!  The level of this mere fluctuates in an unusual way with the underground water, reaching maximum depth in Summer and slowly dropping again through Autumn and Winter. Luckily the other lake, Ringmere, provided water for a variety of wildfowl including swans and mallards. The NWT flying flock also arrived for a drink.

A bracing day, with much to see, even in mid-winter. Next week we are off to Thetford Heath.