7-Apr-26

A working party of nine volunteers gathered near Hartley West Farm this morning for another river clearance session, on a fine sunny day – with birds singing and spring flowers blooming.

Storm Dave had done its worst and blown two trees into the river. The first one was just upstream of the waterfall. We couldn’t get the main trunk out, but, after removing branches, we winched it to the side of the river. The river is not all that deep at that point so waders weren’t needed (although wellies were).

Photograph A. River blockage

Photograph B. Clearing blockage

The end result was a couple of big piles of branches and twigs either bank and a clear river.

The second tree had fallen right across the river at the straight section between the lower wooden footbridge and the stepping stones. This one was a big one! Some others had removed the branches across the path, leaving us with little to do.

We removed some of the remaining branches with bowsaws and piled the debris on dry land. The trunk was still in the river, right across its width, but we don’t have access to chainsaws nowadays, so we can’t do much more about that problem.

We’re sometimes asked why we remove timber from the river – “why not let the river be natural, logjams and all?” Well, logjams tend to be litter traps, and we can’t bear to leave lots of litter floating on the river – it’s unsightly and bad for wildlife. We could leave the blockages in place and just remove litter, but that would be prohibitively time-consuming.

Leaving timber in a river works well in up-country rivers, but it doesn’t work so well in the urban-fringe setting, where litter is more of a problem. We are open to suggestions on this dilemma, but meanwhile we feel obliged to keep the river clear.

Anyway, today was a good one for wildlife. The warblers are in from Africa and are singing their heads off! – blackcaps and chiffchaffs in particular. Also singing were robins, wrens, great tits, blue tits and a song thrush. A woodpecker was heard calling; also rooks, jackdaws and a pheasant. And the mallards were very active, flying up and down the river in pairs inspecting our work.

On a sunny spring day all the flowers open out, and today it was the old springtime favourites of celandines, anemones and bluebells, among others.

14-Apr-26

Spring sunshine greeted the working party this morning (although there had been an overnight frost). Eleven of us met up at the metal gate on the Hartley West Farm road to do some river clearance, sycamore removal and litter picking.

The team co-ordinator and two others set off for the stone bridge where there was a log jammed against the cattle gate (which keeps the cows from wading up the river and into the Dene). Some splashing around in wellies and waders was necessary to get it and other bits of timber out, and the winch had to be deployed to provide extra pulling power.

Photograph A. Clearing under stone bridge

Photograph B. Winching log out

This activity only took part of the morning session, after which the amphibious three joined the other volunteers who had started hunting down and removing sycamores.

Sycamores are a non-native tree species which tends to reproduce prolifically and out-compete the other trees, so we remove seedlings, saplings and the lower branches and twigs of the mature trees – although it is beyond our capabilities to fell the full-grown trees.

In actual fact, we found very few seedlings or saplings and it’s not clear why that is, as sycamore seedlings are coming up in large numbers elsewhere. Perhaps in the Dene seeds are being eaten by voles or squirrels or badgers before germinating; who knows?

We did find lots of litter however, especially along the top of the Dene, near the Hartley-Earsdon road. Along with the usual aluminium cans, plastic packets and bottles, and wine and beer bottles, we found a kiddie’s tricycle! The litter was bagged up and (with the trike) placed next to one of the litter bins for collection.

We couldn’t help noticing in that the spring wildflowers are flourishing in the mixed sunny and showery April weather. It will soon be the turn of the bluebells, which are coming up in masses on the steep slopes on the south side of the Dene between the stone bridge and the lower footbridge.

Cowslips are flowering well at present:

Photograph C. Cowslip

and a comma butterfly was spotted:

Photograph D. Comma butterfly

21-Apr-26

The working party this morning continued last week’s sycamore removal project, this time on the north side of the Dene. The nine volunteers assembled at the metal gate on the Hartley West Farm road before setting off on their quest.

As I’m sure you know, we control sycamore trees in order to prevent them from taking over from other trees in Holywell Dene. They are notoriously “spready” and not native to Britain. We can’t do anything about the large numbers of mature sycamore trees already in the Dene but we can, and do, remove seedlings and saplings.

So, armed with saws of various types we started out from the meeting place and proceeded as a group, with our wheelbarrows, slowly up the north side. The slopes here are steep and tangled with brambles and other impediments, so it was necessary to move around carefully.

Photograph A. Removing sycamore saplings

We found that there were swathes of first-year seedlings in some places but very few in most other places – and we are not sure why. However there were plenty of saplings of various ages, right up to larger ones that might be called mini-trees and that needed to be felled with a bowsaw. But, generally, a pruning saw or a pair of loppers was all that was needed.

We must have removed several hundred seedlings, at least, and of the order of a thousand saplings in the session. We also removed side-twigs from established trees.

Photograph B. Removing side-branches/twigs

When we got to the lower wooden footbridge we found that an old hawthorn had fallen across the path so we removed it. Much less litter was encountered this week, but nevertheless we collected it up and removed it.

Oh, and by the way, we also removed some ivy in one or two places to prevent it getting too much of a hold on the trees in the Dene.

Photograph C. Removing ivy from tree

The wildlife scene was very different from how it was only a month ago. There was a distinct sense of the beginnings of the buzz of summer. The small birds

were singing, flowers were blooming and insects were buzzing. We noticed that the bluebells were beginning to flower and they will probably be blooming en masse in a couple of weeks’ time.

The weather was chilly at first, but seemed to warm up considerably as the session continued – party because of the sun rising in the sky and partly because of the warming effect of exercise. The Dene is always sheltered from chilling winds.

28-Apr-26

The task this morning, for the working party of eight, was the same as last week: removing sycamores – on a rather dull but dry day.

We started where we left off last week – more-or-less at the downstream wooden footbridge – and worked upstream from there on the north side all the way up (almost) to the waterfall.

It was hard going, for two reasons: (1) the terrain was steep and tangled with brambles, and (2) there were lots (and lots) of sycamores – far more than we found on the south side on the 14th.

Most of these were saplings – easily pulled up or cut off at the ground level. Some had obviously been there for several years. Well, it’s several years since we did “sycamore bashing” there. The Dene’s a big place and sycamores can pop anywhere.

Photograph A. Removing sycamore saplings

As usual, we also removed side-growths from mature sycamore trees.

Photograph B. Removing side-growths

The spring wildflowers were in bloom and that somewhat compensated for the difficulty of the task. Here’s a (probably incomplete) list: bluebells, lesser celandines, wood anemones, dog violets, wood sorrel, wild garlic, dandelions, garlic mustard.

The small birds were making their presence felt as well – robin, wren, willow warbler, chiffchaff, great tit, song thrush, blackbird, etc.