On Tuesday afternoon, my good friend Tom and I made a trip
down to the green part of the Ingrebourne Valley, stretching from Upminster
Bridge, and accessed by the Hornchurch AFC football stadium, down almost as far
as Rainham, where our local river flows into the Thames estuary. We had chosen
a bright sunny day and there were plenty of smart Banded Demoiselles about.
These stunning insects, which have a bright, metallic lustre about their
bodies, and, in the male, deep blue bands on their clear wings, are specialists
in these fast flowing streams. Swifts and house martins were overhead,
circling in the clear blue sky. House Martins, it is now understood, spend a
lot of their time feeding at such altitudes to be outside of our visual range,
and these were climbing higher, ascending to height and disappearing from view.
We heard the first cuckoo of the day not long after joining
the Ingrebourne valley, and outside of Hornchurch Country park “proper.”
Cuckoos populations are, like those of many long range migrant birds and
farmland specialists, are declining, and are something of a conservation priority.
That was far from apparent in the Ingrebourne Valley. A short while later one
of these elusive birds flew overhead.
The presence of relatively scarce and declining farmland birds was
remarkable that day, but more of those to come.
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Banded Demoiselle at the Ingrebourne Valley |
Passing the inevitable flocks of Carrion Crow, Woodpigeon and Feral Pigeon, we
wandered along the river, glancing down into it in the hope of catching sight
of one of the fabled Barbel, large fish which spend their lives fighting
against the strong current, but these, unfortunately, proved elusive. Orange tip and Small White butterflies were
on the wing, and there were chaffinches and robins singing. Arriving at the
lookout point over the Ingrebourne valley, a little charm of goldfinches flew over us. A
few benches here provide excellent views over an area where the Ingrebourne has
been allowed to widen and form reed beds, with green phragmites spikes rising
out of the brown remnants of last year’s growth, and spread over flat areas of
mud and shallow water. To our surprise a
migratory wader, somewhat scarce in the South East, was feeding in the
shallows. It was a small plover, and the bright yellow eye ring which gave it
away as a little ringed plover was clearly apparent. It was happy to pose for a
couple of ID able photos. We sat for a while and admired the view, a juvenile
Grey Heron, a typical denizen of wetlands all over Europe, lazily flew past,
and a few moments later, a Little Egret flew off in the same direction. There was a mute swan further upriver, and a
small flock of mallards also contained a pair of Gadwall. A couple of Lapwing, another bird not so
common in the summer months around here arrived and began their display of
aerial agility, whistling and rocking from side to side in flight flashing
their bright white undersides and metallic green topsides. We watched the
display with interest, what purpose it served was not clear, the affirmation of
a pair bond, or perhaps to distract some unseen predator. It distracted us, and
we watched the birds for a while until they moved on to another part of the
river.
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View from the viewpoint over the marshes. |
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Little Ringed Plover |
We continued our walk to where second world war pill boxes, heavily armed
positions built for a frantic, last ditch defence of Hornchurch Airfield in the
event of a Nazi invasion, stood looking over the marsh. Here RAF personnel would have maintained a
vigil, even as the bombs fell on the airfield they were charged with
protecting. We went inside one of the concrete
structures, and despite litter and graffiti it retained an eerie sense of
history. In front of the pill box lay extensive marshes, beds of phragmites,
but the view of these was now obscured by growing brambles. Behind it, beside the asphalt path, stood a
few Hawthorns, and a whitethroat sang from the upper branches of one of
these. The May Blossom has now begun to
fade, but summer wildflowers were abundant and a Small Heath butterfly
fluttered between them. This little brown Satyrid butterfly is often a species
of very old stretches of grassland and I believe this was my first one at
Hornchurch Country Park.
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One of the wartime pill boxes at Hornchurch Country Park. Everything looks a bit more evocative in black and white. |
As the path snaked around towards Albyn’s Farm Lake, we
heard another cuckoo singing in the trees. Chiffchaffs and great tits also
sang, and we caught site of a bird which might have been a blackcap. The lake
itself revealed little of interest so we proceeded towards Ingrebourne hill, a
huge, grassed over pile of rubbish now designated as a nature reserve. We
passed a field which was alive with wildflowers, and saw a Kestrel mobbed and
harassed by a whole flock of starlings, behaviour which, of course, they
abandoned as soon as I got my camera out. The starlings assembled on gates and
fences, clearing the path as we passed, returning to it once it was behind us.
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Meadow Habitat at Ingrebourne Hill |
It was here we got another pleasant surprise. There are Skylarks here, we must
have seen ten or so individuals. One sang from a fence upright and allowed us
close enough to take photos. It was a handsome, streaky brown bird, about the
size of a starling, with a small but obvious crest on its head. Another two
hung in the sky, hovering, on their song flights. Loud, trilling and whistling
skylark techno filled the air. Birds appeared out of the grass as we approached
and we stuck to the path for fear of disturbing, or stepping on, any of the
nests on the ground. Skylarks, and their song once almost
ubiquitous in the English countryside are another of these species whose
populations are now in virtual freefall. Changing, more intensified farming
practices, and earlier harvests are destroying their nests, although they show
signs of benefiting from Agricultural Stewardship Schemes. Joe Public and his dogs are also something of
a menace, as the animals, left off leads to run in the grass, will often sniff
out and devour the eggs and chicks of skylarks, while their owners are all too
often oblivious. Plenty of dogs and their humans use Ingrebourne hill, although
some of the neighbouring fields flourish with wild vegetation and have access
restricted by wire fences. Public
access has its drawbacks from a conservation point of view.
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Very vocal, and confiding, Skylark at Ingrebourne Hill. |
We walked back the way we came, and saw a Red Fox at the bottom of ingrebourne hill, disappearing into the scrub. Making our way back we paused at Albyns Farm Lake to watch several flotillas of
Canada Geese and their Goslings, each family with chicks of a slightly
different size. Their parents lowered
their heads and hissed each time one of the solitary, non-breeding adults came
close. A great crested grebe hung about
close to the island in the middle, and there were a few coots, moorhens and
Tufted Ducks about. Wildfowl scattered as a couple of idiots encouraged their
hounds to take a swim in the water, but thankfully the dogs seemed uninterested
in any of the young birds. They do stir up the water and disturb the wildlife,
why one would allow a predator like that to swim in a lake full of young birds
is beyond me, but mercifully no harm seemed to be done, this time.
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Canada Geese and Goslings on Albyn's Farm Lake. |
As we passed the viewpoint again there was one more treat in
store for us, as the hawk like shape of a cuckoo flew past us, giving us both
good views. It is a sleek, slender grey bird, reminiscent of a Sparrowhawk with
a long tail. The head is held slightly raised in flight, giving the body a
curious shape, somewhat reminiscent of a banana. They must be breeding here, parasitizing the
nests perhaps of Dunnocks or Reed Warblers, both of which are found here, I
assume, as they would be unlikely to be here in such numbers on passage. I tend to think of the Cuckoo as a relatively
scarce bird, worthy of a summer visit to Heybridge Basin or Lakenheath Fen to
see, but here they were, at least three separate birds, in a strip of country
bordered by suburban metropolitan Essex in all directions. This unique strip of land deserves its SSSI and local nature reserve designation, and seems, almost every time, to host unexpected wildlife. Below is a rather gorgeous hairy caterpillar we found on the grass near Albyn's farm, any ideas?
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Beautiful, but as yet unidentified caterpillar. |
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