Wildfowl
on the Severn
A
brief history by Paul Walkden
Fowl
within the Severn area is a subject all local fowlers
should study, so as to know and understand their build
up and movements. Members having joined within the
last seventeen years will have been involved with
assessment at Slimbridge and so a grounding will have
been established with Wildfowl species.
The
Wildfowl & Wetlands Trust which was established
in 1946 as The Severn Wildfowl Trust at Slimbridge by
the late Sir Peter Scott probably brought about the
greatest change in the area; the Berkeley family had
always kept the new grounds as a goose area, where on
occasions through the season, driven goose shoots would
occur. The reason for driving the geese was that, the
Whitefronted Goose is renowned for feeding and roosting
on the same grounds and as such, the normal goose pattern
of flighting from the marsh inland to feed does not
happen, and so the driven goose shoot was the norm.
The
Trust enclosures were like a magnet to wild birds and
over the years many birds have benefited. The Gadwall
was a rare bird in Gloucestershire but now is often
found moving about the area and found on many ponds,
lakes and flood meadows.
Another
bird which was largely unknown in the area was the Bewick
Swan, now an established winter visitor, many birds
moving from Slimbridge daily to feed on Walmore Common
near Westbury on Severn which is a RAMSAR site, or the
Tewksbury Hams when flooded.
All
the dabbling species have increased, with good numbers
of Pintail, Shoveler and especially the Mallard which
when severe weather sets in many thousands congregate
in the Trusts enclosures. At the onset of a cola snap
Teal will begin to leave and numbers pass through heading
South onto the Continent, some reaching as far as North
Africa. Teal build up in numbers early season, often
reaching upwards of two thousand over recent years,
these birds then thin out leaving southwards as the
Wigeon begin to build up. Teal that spend the winter
with us have generally come from further afield.
Diving
ducks are another duck which have increased. Tufted
duck and pochard appear to spend their entire winter
on Rushy Pen at Slimbridge. However, some do move off
in the evenings and reports from various ponds confirm
this.
If disturbed in the day they flight to the Frampton
pools, crossing the Frampton marsh There is always a
flight of Diving and dabbling Ducks as well as the Canada
and Greylag geese which often move to the Trust at the
onset of dusk and sometimes return at dawn.
Some
feral birds which are protected and may be encountered
locally are the Mandarin which is a tree duck and is
well established locally. The Goosander is another regular
since a brood was reared fully winged on the Rushy Pen,
this was a family of young brought in when the duck
had been run over in Wales Numbers of Ruddy duck which
escaped from the Trusts enclosures in the early days
have colonized Somerset and the Midlands, amongst other
areas, this interesting little duck which has had a
population explosion, have started moving to the continent
and is now threatening the European stifftail the White
Headed duck by hybridizing. Research currently under
way on how to reduce the population of the Ruddy Duck.
Canada and Greylag geese were brought to the Frampton
Court Estate in the early fifties by joint agreement
with The Wildfowl Trust to enhance the park lake, for
sport and in the hope that they would fly between Frampton
and Slimbridge, they make a spectacular sight crossing
the marsh often at flight time, the sight and sound
always set the pulse racing. Under the agreement with
Frampton Estate many members have had the opportunity
of a feral goose or two over the last 6 seasons.
In
the early days of the Trust, Pinkfeet were common on
the New Grounds, they arrived early in the season and
built up to around 200 before moving off around Christmas
time, but gradually they decreased until now they are
scarce in any number. This appears to be a natural move
northward, Lancashire now being the nearest area where
they appear in any number. At Martin Mere the Wildfowl
& Wetlands Trust Centre, counts of 20,000 are not
uncommon. Wildfowlers should always be aware that any
of the Grey geese, Greylag, Bean, Pinkfoot, Lesser Whitefront,
Greenland Whitefront can be mixed in (and often are)
with our Russian or European Whitefronts.
The
Upper Estuary has been an S.S.S.I. (Site of Special
Scientific Interest) for some years and in 1988 was
designated a RAMSAR site (of international importance).
In 1989 the Lower Severn was designated an S.S.SI. And
finally a RAMSAR site in 1995. The Estuary is one of
the top 10 Estuaries in Britain for birdlife, of International
importance for Bewick Swan, Shelduck, Gadwall, Dunlin,
Curlew and Redshank. On a National scale the area is
of prime importance for European Whitefronted Geese,
Wigeon, Teal, Mallard, Pintail, Shoveler, Pochard, Tufted
Duck and Grey Plover.
With
the continued pressures on Wildfowling it s essential
that wildfowlers understand and now their quarry species
and be able to recognize them by their JIZZ. This is
a word used by birdwatchers to give instant recognition
based on shape, size, silhouette, sound and movement.