urban_greenwatch: (Default)
2010-02-28 11:36 pm

it's coming...

First daffodil in the garden, a tiny narcissus. There are crocus, too, till in the bud, soon to follow. No snowdrops yet; they take a while to get started, and I am starting from concrete, clay and mud back here. Next year, maybe. All along the tow-path, spring is touching life from the trees, buds swelling, almost bursting. Spring is coming. This year, the thing that has struck me the most is not those usual pretty harbingers of spring like catkins and snowdrops, but the masses of fragile young seedlings scrambling out from under snow and hail with astonishing deterination and haste. They're growing everywhere; in piles of old leaves, along the edges of streets, in the cracks in pavements, shooting up so fast, that it seems that you might be able to see the growth if you watched it for an hour in weak spring sunshine. No way of telling what they are yet, though you can guess from near neighbours. Hollyhocks by front gardens, dockleaves on waste ground. In my back garden? Wait and see. In the meantime, ladybirds are coming out to sun themselves when they can find some sun. Aphids, doubtless, will be along any minute. The slugs are certainly here already; look at that daffodil's second bud.

signs of spring signs of spring
signs of spring signs of spring
urban_greenwatch: (Default)
2010-02-10 11:53 pm

the joy of bare branches

On the way down the towpath this last week the branches have been showing a faint blush of red, the bud-swelling precursor of leaves to come. Soon they'll start to fill in with pastel pale new leaves and the beautiful hard shapes of winter branches will be veiled with a yellow-green haze. I'm always a little sad to see the tracery of black branches go; on a bright winter evening the deciduous hedges rest like lace on blue satin, a beautiful edging for the cold black land. On snowy mornings, the snow rests like extra highlights in the crooks and lines of the branches. Look up this week, for the last clean view of bare winter trees.

winter trees winter trees
winter trees shy heron
urban_greenwatch: (Default)
2010-02-05 10:28 pm
Entry tags:

unexpected caterpillar

A truly unexpected sight as I left the house on a frosty morning. A substantial, one might even say juicy, caterpillar, dangling from the front fence. It looked on the way to dying, but it wasn't dead yet; and, more to the point, how had it gotten large enough to choke a blackbird by the first week of february?

The answer, I suspect, goes back to shortly before Christmas when I was chopping down chunks of the trees out back to let more light down into the back garden. I chopped lelandia and laurel, neither a likely food-plant for an overwintering egg or larva, but there were also passion vines strung among the branches. A delicious evergreen food plant strung among cosy evergreen trees, facing the morning sun? What could be more congenial for an overwintering butterfly egg?

Chopped and tucked into my green recycling bag, it hatched in the warmth of my shed, and gorged on chilled but still tasty leaves, away from the frost and snow while for almost a month my green waste lay uncollected, recycling lorries kept at the depot for fear of ice and snow. Like a caterpilllar in a jam jar it grew fat and fast.

The morning they finally came to collect the green waste, though, was brutally cold. Shaken from its cosy bag it chilled and died. By the time I got home in the evening, something had made a meal of it. Mmmm! Caterpillar slush-puppy.

What species, though? I'm guessing one of the commoner whites.

aseasonal caterpillar
urban_greenwatch: (poppyhead)
2010-01-28 08:02 pm

your reward this morning is mergansers

Back on my feet again and down the tow-path; who will I see today? A few mallard, some fat coot, and the usual gang of feral geese. Six magpies and a flock of pigeons foraging in the paddock. The usual gang of gulls disappointed by my lack of bread. A pair of chaffinch, starting away from me, flashing black-and-white wings. A flock of mixed tits, and closer views of Great tit, Blue tit, Long tailed tit. A Dunnock, fluffed up against the cold, singing a soft practice song. The robin, the blackbird, in their respective territories. In the rarities list, a rather small Black-backed gull. Could be the rarer Lesser Black-backed, but might be a young one, like the Grebe I saw yesterday, ducking and diving.

Oh, and a trio of Red-breasted Merganser. Merganser are fish-eating ducks, diving saw-tooths with long, slender, serrated bills. Of all the ducks, they have the most of the dinosaur about them. The light was not good, they were skittish, and feeding on the far side of the Thames. But they looked much like these. The male has a bright raggedy green iridescent head; the female is a sparky redhead.

Inland and south isn't their natural home; more likely to see them on the Scottish coast, or in lakes. I worried briefly that they were escapees from a collection. Ornamentals are often kept in threes to increase the chance of breeding. But then they spotted me and flew downriver; definitely wild. Tourist ducks.
urban_greenwatch: (feather)
2010-01-12 07:22 pm

its own reward

I struggled along the tow-path on monday under sky so low and grey it didn't even get light at lunchtime. The birds had stayed in, too; just a single magpie on the frozen field, a lonely gull white against a whiter sky. The snow had turned to filthy slush, churned black along Folly Bridge, slippery and vile.

This morning I was expecting things to be about the same; but some tiny fractional increase of light and warmth had woken up the birds. There was a robin, perched outside a narrowboat, waiting for the inhabitants to wake up and give him breakfast. Here a mob of gulls checking me for food. And as I walked across the bridge, hand clamped to the metal rail, guard against slipping in the slush, a wren darted out from almost under my hand, close enough I could feel the flap of its wings. She'd probably been hinting spiders in the crevices on the bridge; they're still there, even in the cold, guarding their egg sacs.

I tried to photograph one, but it was just too dark.
urban_greenwatch: (heron)
2010-01-07 07:16 pm

day two of the snow

Day two of the snow is when you leave the house, start to move around, test your cold weather gear and find out what transport is still working. I tried a few different boots (settling on the sturdy vintage walking shoes I "borrowed" off my mother's husband about ten years ago), piled on the christmas knitwear and set off for the tow-path.

By the bridge there were foraging flocks of Long Tailed Tits and Redwings in the Alders and willows, picking through next year's catkins as yet tightly curled. The river was seething with wildfowl and a few hardy rowers. I saw three mallards and a coot squabbling over an apple bobbing in the shallows; a gull joined them, shrieking that if there was food to be had, he should have it.


snowy redwing

The real treat though, was in the weirdly galled silver birch (the effect of Witch's Broom Fungus) where a clatter and a flash of green resolved into a beautiful green woodpecker. It took one look at me and bolted across the paddock (where a solitary horse was sulking, under its blanket) so here's someone else's photograph.

At lunch, I went out again, and nipped up the canal (juvenile Grebe, Pied Wagtails foraging on the broken ice of the canal, a Moorhen taking a snow-bath) to see if there was anyone ice skating on Port Meadow but there was no floodwater, so no ice, and no ice-skating, only people building snowmen as far as the eye could see.

port meadow
urban_greenwatch: (Default)
2010-01-05 06:56 pm
Entry tags:

snow day

I tried the frost underfoot today and decided it was worth trying the towpath. By way of reward I didn't fall into the river, but I did see:

Magpies and magpies and magpies.
A mixed flock of Blue Tits and Great Tits.
Two winter flocks of Long Tailed Tits.
A cheeky Redwing.
A pair of sparrows foraging in a leaf-choked gutter.
That thrush again, ducking into the ivy.
An explosion of woodpigeons as I passed six foraging too close to the path.
Assorted gulls, mallard, geese, blackbirds, coot and a swan.

After that I wasn't expecting the walk home to stand out, but I was wrong. It was both brought forward a little and made enormously more exciting by the presence of snow!

snow!

Falling snow fills the negative space of the urban environment, making what is usually air a mass of exciting whirling particles, suddenly visible in all its glorious three-dimensionality. This usually invisible and ignored space is suddenly given turbulent life and I see now that it is full of current and eddies, gusts and breezes, particles around which ice can form and fall. The disturbances to the flow caused by vehicles, trees, buildings is suddenly revealed, and as if someone had dropped dye into a wind-tunnel, the air becomes suddenly visible, tangible and real.
urban_greenwatch: (heron)
2009-12-31 02:47 pm
Entry tags:

shopping trolley reef

On the way across the bridge today, I spotted a shopping trolley in the river. The water was goose-turd green, angry and high. We're on flood warning, and the Thames is fast and brutally cold at the moment. A human would be foolhardy to venture into that mess to fish it out. So there it stays, for a while, becoming part of the river.

Which brought the thought that it would rapidly be colonised by fish and weeds and riverine invertebrates. By the time it was removed, it would be sheltering species, well on its way to becoming its own tiny ecosystem.

I'm not the first person to think such things; meet the Bath Marine Preservation Society's Trolly Reef, and follow on down the comments for the eerily beautiful Original Abandoned Shopping Trolley Project.

All of which leads me to wonder how much of conservation is about returning an area to an idea of appropriate wildness. The plants and animals don't especially care, they will happily grow through concrete, tarmac, old bikes and shopping trolleys. You could argue about rust, broken glass, sharp edges but moss and murk will happily cover all of that, given time. And the wildlife would probably appreciate being left in peace.
urban_greenwatch: (heron)
2009-12-30 02:41 pm
Entry tags:

the song thrush too sudden to photograph

This morning the ice had melted and rain was seeping from a flat grey sky. My heart leapt at the sight of such congenial weather. After a week of teetering to the busstop over glass-slick pavements fearing each slush-slippy step, finally I could return to the tow-path.

With cheerful (albeit slightly damp) humour I decided to record my morning bird list, which reads:

House Sparrow (1)
Crow (4)
Pigeon (8)
Magpie (11)
Black Headed gull (20+)
Mallard (10)
Coal Tit (1)
Coot (8)
Robin (3)
Blackbird (1)
Collared Dove (3)
Song Thrush (1)
Canada Goose (30+)

This is the clear identifications only. I've left out all the half-glimpsed or heard-not-seen birds. It's quite disappointing, especially the tits. Where are the Wagtails? The Redstarts? The Long Tailed Tits? Where are the Swans?

However, one thing on that list was a surprise! I wouldn't normally expect to the see a Thrush on the tow path, and there he (or she - they're not sexually dimporphic at all) was, hopping into the ivy with a beak full of something.

I peered round the bush and found myself face-to-beak with a thrush with a banded snail ready for smashing. I'd probably just startled him off an anvil stone.
urban_greenwatch: (poppyhead)
2009-10-22 08:38 am

missing the petunias

On October 1st, it all comes down. Hanging baskets and roundabout planting, park planting and other displays like these huge troughs of petunias outside the council offices. Of course, the heady days of Oxford being a major competitor in the Britain in Bloom competitions is long gone, but the local competition, with its odd list of categories (community garden therapy award, best language school, best kept small front garden) persists, even as municipal planting falters and fades, to be replaced with more economic and wildlife-friendly shrubs and grasses. But here and there, pockets of petunias remain. Florence Park is always worth a visit; it doesn't have many beds, but they're always excellent. And there's this lot outside the council offices. I never much liked them (pink, blousy, common) until the crossing was shifted so that I walked past them every morning on the way to work. Close up, the colours and scents are spectacular -- ironic, considering that municipal planting is mainly aimed at distance viewing from perabulators or passers by in vehicles. And they were clearly shedding seed, water, fertiliser, spreading green threads out into the pavement cracks and crevices around them; an oasis of fertility in the concrete, glass tarmac. After they went it was a full week before I noticed that their illegitimate plantings had been cleaned out at the same time; everything scrubbed back down to stone. Until the next thing grows.

planting official and unofficial
urban_greenwatch: (feather)
2009-10-13 08:12 am

sleepy sheild bug

Off gardening at my friend Melanie's, I found this pretty shield bug huddled against my cooling mug of tea. Sheild bugs are vegetarians, sap-suckers, and generally seen as a bit of a pest (although there's one in New Zealand that's a caterpillar sucker) but I think they look cheerful and handsome. It could be the amusingly-named Acanthosoma haemorrhoidale, the hawthorn shield bug, or a birch shield bug, but from the location, it's probably a Juniper Shield Bug -- like lots of people with overlooked gardens, Melanie has conifers sheilding the borders of her garden, and Juniper Sheild Bugs love that. I remember one christmas, I decided to deck the halls with boughs of lelandii (that being what I had). For the next week, sheild bugs were sleepily popping out of the dense branches and crawling around the sitting room. Lelandii are brutes, but the dense vegetation shelters small birds from predators, and provides a safe and surprisingly warm space for hibernating insects; in spring, watch out for ladybirds creeping out from under them.

beautiful shield bug
urban_greenwatch: (Default)
2009-10-02 12:42 pm

three ages of the alder tree

three ages of alder tree

All along the tow-path, alder trees grow. These are Black, or Common Alder, an old childhood friend of mine. They seed freely, grow in bogs, spread by sucker, and spring up to a decent size in just a few years. They were the trees we cut for the wood-burning stove, and I remember the carroty smell of the wood well, how easily the quickly-contructed branches would cut; and also how long the sodden wood took to dry. We never had to sow the trees; as this picture demonstrates very clearly, it has a long breeding season and produces plenty of seeds.

Along with Willow, Alder is the tree which reclaims soggy, boggy ground, springing up to form a a quick-growing screen and windbreak, shelter and insects for small birds (I often see Coal Tits and the like firtling and fussocking around among them), sucking up the water and enriching the soil, and generally getting it ready to for everything else to move in; a friendly native that makes quick windbreaks and shade.

A word of caution, though; it's thirsty. Don't plant it unless you're sure of your water.
urban_greenwatch: (Default)
2009-10-01 07:11 am
Entry tags:

it's beautiful, but what is it?

who are you?

All along the tow-path at the moment are swathes of a beautiful blue flower, that grows in long, knotted stems on tough dark green stems with thin, afterthoughtish leaves. I've collected its seeds for a few years now (for wildflowers) but I still don't know its name. Time to find out!

It's a blue flower, so obviously my starting point is a Cornflower, the famous blue face of unweedkillered cornfields. I'm pretty sure it's not a Cornflower (soil wrong, stem wrong, flower the wrong shape) but shock! the third suggestion on google image is clearly the right flower. Number five of Holly Golightly's top 10 something blues is the right flower, and identified as a cornflower. The story of Queen Louise of Prussia keeping her kids entertained and quiet by weaving wreaths of cornflowers, too, that would work better with this flower than with regular cornflowers, it makes itself into wreaths. Perhaps it is a cornflower after all, just a different sort.

Time to get serious about identification. By serious, of course, I mean searching British Wildflower's index page for the word "blue". And, almost immediately, I have a contender; the gorgeous Sow Thistle Common Blue. Alas, though the flowers are right, the stem is wrongly arranged, the leaves all wrong, and anyway, it's not common. My boistrous riverside scrambler is something else. Nothing similar in Floral Images's blue gallery, either. Is it an escaped exotic? Perhaps someone a bit more local might help? Someone selling waterside seed mixes sourced from the thames?

Damn, I've checked through the unfamiliar names, but to no avail. My best match is Hairless Blue Sow Thistle, but given as how it's blue, slightly hairy and more knapweed-like in appearance than sowthistlesque I must retreat defeated. For now!

Thanks to [personal profile] j4 this is identified as chicory, famous for pretending to be coffee and curing intestinal worms. It's also a famous Roman herb: "Chicory is an ingredient in typical Roman recipes, generally fried with garlic and red pepper, with its bitter and spicy taste, often together with meat or potatoes." More culinary uses here.
urban_greenwatch: (heron)
2009-09-10 08:38 am

front garden fancies

urban greenwatch

I went in along the main road this morning, and a black thing in a front garden caught my eye. I was expecting a rubbish bag, torn open by foxes, but the object was much more Oxford than that. A vomit spattered dinner jacket, discarded by its sozzled owner the night before and dropped uncerimoniously into someone's border; at which point slugs had crawled from the flower bed to sample the vomit. When they're not being eaten by Hugh Fearnley-Whittingstall, or having wild hermaphroditic sex slugs are great eaters, nibbling away at pretty much anything from labels on weedkiller bottles to other dead slugs, but they do show marked preferences (usually for my Cosmos seedlings). Now, thanks to the drunken children of Oxford, I can add another thing to the great list of things I know slugs eat.
urban_greenwatch: (Default)
2009-09-07 12:34 pm

interesting dead thing #1 : crayfish!

freshwater crayfish (small)

I spotted this scrap of carrion by the side of the towpath, and thought it was a large insect, then a scorpion (which would really have been strange; no scorpions around here!). Of course, it's a crustacean, a Crayfish -- and from the size and dull colouring I'm guessing that it's one of our native White Clawed Crayfish rather than the larger invasive species, the Signal Crayfish. Mind you, I'm guessing by squinting at the picture on this page, so I might be wrong. White Clawed Crayfish are endangered in the Thames, and very rare, after all. But, Signal or White-clawed, what on earth was one doing dead by a tow-path? It wasn't even on the river side, but tangled in some ivy beside the cricket fields!

Chances are, it was dropped by a predator. Herons and crows both take crayfish, as do minks, rats and otters. I've never seen an otter or a mink in Oxford, but crows, rats and otters are well represented, and all of these may drop a prickly mouthful, especially if disturbed.

The first crayfish I had ever seen on the Thames, and it was dead; once they were so common that everyone along the Thames had a crayfish pot or two, and they were sold in the Oxford market. A dish of crayfish, as scarlet as coral, was not unfrequently seen at a College luncheon... (read on)