Category: Habitats

Sparrows on the Shed

roofing felt x 60

This photograph looks rather like a scree-slope on a Lakeland fell but in fact each of these slate-like fragments is less than a millimetre across, smaller than the commas on this page. It’s a piece of roofing felt taken at 60x magnification through my microscope. The felt is bitumen-coated with a ‘green mineral’ finish, but it looks browner in my photograph. The flaky shapes and the colour make me guess that this is a green variety of Muscovite mica called fuchsite. The flakes (laminæ) of Muscovite are thin and surprisingly flexible, so they’re ideal as a coating on rolls of roofing felt.

There’s another mineral present; the rounded, glassy mineral near the bottom left-hand corner is a worn grain of sand, silica.

Fuchsite is rich in chromium but like other micas, as a form of silicate, it has a chemical composition based on aluminium, silica and oxygen (AlSi3O10). Micas are part of the group of minerals known as Phyllosilicates or sheet silicates, which take their name from phyllon, the Greek for leaf.

sparrows on the shedIt was sparrows pecking on our newly felted shed roof that prompted me to take a closer look at its composition. Why should sparrows feel the need to peck at flakes of mica?

Muscovite is 2-4 on the Mohs scale of hardness, depending whether you’re testing the softer ‘sides’ or the harder face of the flakes. This means that it’s somewhere between a finger-nail and a pocket-knife in hardness, so the sparrows might swallow it as a form of ‘gritting’. The flakes might be used in the bird’s gizzard to help grind down the seeds and grain that form its staple diet. Fuchsite is made of clayey minerals so it might also have medicinal properties that help with digestion, just as we’d take kaolin, a fine white clay that is another form of sheet sillicate.

sparrows on a wallSparrows will also peck at mortar on walls (right), which gives them access to more minerals; silica in the sand and the calcium carbonate in the cement.

When Paul and I put the new roofing felt I predicted that the sparrows would love it: “It’s like putting a new sheet of Tydsan in a budgie’s cage!”

Tydsan is the trade name of sheets of sandpaper, cut to size.

“Our budgies had to make do with newspaper in their cages!” Paul tells me.

Muddy Boots

Busht Beck

muddy bootsIt’s good for me to have a walks booklet to write at this time of year as I’m sure that I wouldn’t otherwise have set out on a six mile walk, crossing some unfamiliar corners of the countryside, and that would have been a pity because I’ve enjoyed the walk a lot, despite the muddy boots!

My ambition in life is to be able to drawn direct from nature but practically on a day like today, in locations that are a muddy half mile tramp from the nearest road, that’s impossible, so I go for the approach Wainwright used when he illustrated his famous guides to the Lakeland Fells; I take plenty of photographs which I can then draw at leisure indoors. Wainwright had to use black and white photographic prints, I can sit at the widescreen of my computer or load a few images onto a memory stick and draw them from our widescreen television downstairs. I feel I’m not being so unsociable with Barbara if I take my work downstairs; she can get on with whatever she’s doing and we can have some music on in the background. The average drawing takes me one CD album to complete.

With the ground so muddy and the paths so trampled, the hedges and woods so stark and bare, I find myself looking for other subjects to suggest how attractive the walk can be. Architectural details look good at any time of year and I also look for untrampled corners like mossy trees trunks and streams, or, even better, the two combined as on this bend on Bushy Beck (above) downstream from Ardsley Reservoir.

I took 83 photographs on this 6 mile walk. Any change of direction in the path, any stile or bridge is always worth recording, just in case I need it to illustrate a tricky point on the walk.

Shed Roof

garden shed
Our garden shed in its heyday, painted as a sample when I was working on illustrations for Dr Hessayon's Garden Expert guides.

Paul the gardener tells me that one year he and his father decided to record all the produce they harvested from their vegetable garden, which is about the size of a tennis court. The total weight of apples, onions, potatoes, carrots, cabbages, soft fruits and so on was three-quarters of a ton!

This morning we’re re-roofing my garden shed.

garden path“That should last us out!” he suggests.

Well, I hope it doesn’t last us out but I think it’s got a chance of lasting out the twenty-year old shed itself, which is looking rather battered and weatherworn where we’ve cut back the Ivy that engulfed it.

Spot the shed! – in this photograph of the back garden (right), the Ivy-covered shed is on the right. People would walk down the path and not notice that we had a shed until they walked back up and saw the side with the door in.

Salmon or Sea Trout?

salmon

mystery fish - a sea trout?Today I saw cormorant and goosanders on the Calder; the increasing number of ducks on the river is an indication of how water quality has improved. I was delighted to see this photograph (left) in an e-mail, taken on a mobile phone by local angler Keith Inglehearn, who had been fishing for pike in the River Calder at Horbury Bridge on 31 December.

“I caught the fish pictured on a whole mackerel and it weighed 6 pounds.” Keith tells me “It was returned carefully to the water and swam off strongly.”

To me this looks like a salmon so I contacted Kevin Sunderland, who has been monitoring their return into the Aire and Calder. Kevin tells me: “I’m no expert on these things but my initial thoughts are that the fish isn’t a salmon but is probably a sea trout. I base this solely on the fact that the tail does not appear to be forked as in a salmon.

“I went to Knottingley on 5th November to see what the effect the flooded river would have on Knottingley Weir. I believe that any fish below the weir would have got up. I went to Kirkthorpe on 15th November and witnessed numerous large fish attempting to ascend the weir, presumably the fish which had got up Knottingley a week previously. Maybe the fish which Keith caught was one of these.”

mystery fishI’m hoping that the experts at the Environment Agency will be able to help us identify the species. If Sea Trout can migrate up river and find their way up Kirkthorpe Weir at Wakefield it shouldn’t long before the Salmon follow them.

“It really is remarkable for the river to be holding fish like this.” says Keith, “I have lived around this area all my life and I have been an angler for the last 43 years. I remember very well what the state of the river and canal was like when I was a youngster!”

Spring Mill

Spring Mill DamIt’s surprising to find so much open space between suburban Ossett , one of its industrial estates and junction 40 of the M1. From Spring Mill Lane, now closed to traffic, there are views across the playing fields and the 9 hole Springmill Municipal Golf Course south across the Calder Valley to Woolley Edge and east to the scrubby scarp slope of Lupset. Most of the wildlife interest here lies in the narrow valley of Spring Mill Beck, landscaped in the 1970s or 1980s as a public open space and now popular with dog walkers.

Spring Mill

moorhensOn the pond – which I guess is what remains of the old mill dam – there were fifty Mallards, mainly drakes with a pair of Moorhens skulking along the bank.

Squirrel's dreyI wouldn’t have guessed that this bundle of twigs was a squirrel’s drey if I hadn’t seen one Grey Squirrel follow another into it. It must be a snug fit for them.

The male – often several males – pursue the female during courtship, which takes place in December and again in May.

long-tailed titIn the plantation beyond the dam Long-tailed Tits made their way through the branches while Blackbirds foraged in the leaf litter below. A flock of Goldfinches flitted about in bushes close to adjacent back gardens, perhaps attracted to bird-feeders there.

Seckar Heath

Ivy at Seckar HeathLush, evergreen and a mistily mysterious; there’s a jungly feel to the hollow around the ponds below Seckar Heath.  Shaggy columns of Ivy-covered Silver Birches rise from an understorey of Rhododendrons. One of the birch boughs has fallen by the path, perhaps brought down by the extra weight of snow gathering on the Ivy.

The ponds were once formal pools in the garden of photographer Warner Gothard who left Seckar Heath to the people of Wakefield and Barnsley when he died in 1960. Seckar Heath, mid-way between the two cities, is a Local Nature Reserve and a Site of Special Scientific Interest.

Seckar HeathFrom the ponds we walk through woodland of oaks and occasional pines (Corsican, I guess) on the steep path up to the heath which lies on an outcrop of gritty sandstone.

Heather shootsOn a patch of heath that appears to have been deliberately burnt or cut, fresh green shoots of Heather are now beginning to regenerate. Oak and birch saplings have been cut back to keep the heath open. Blocks of the heath are cut every 20 years, preventing the trees shading out the Heather which predominates along with Gorse, Bracken and the glossy leaves of Wavy Hair-grass at the top (western) end of the heath.

RedwingsIn the belt of Sessile Oaks and Silver Birches at this end of the reserve, a flock of twenty Redwings are turning over the leaf litter. I always picture Redwings flocking to Hawthorn hedges to feast on the berries so it’s interesting to see them foraging for invertebrates in the same way that Blackbirds and other thrushes would.

Also seen: Long-tailed tit, Woodpigeons, Magpie, Robin, Chaffinch, Jay, Scaly Earthball, Scleroderma verrucosum.