Three herons in
December.
December was a good
month for me to spot different species of heron in the Churnet Valley
area.
On 23rd of
the month I saw a Little Egret for the first time at Stanley
Pool (not strictly speaking in the Churnet Valley but close being
about 2km from the boundary of the Churnet Valley Living Landscape
(CVLLP) area.
Little Egret on Stanley Pool.
Then on Christmas Day,
whilst walking on a public footpath between The Roaches and Goldsitch
Moss me and my husband nearly stepped on a Bittern which had
been sitting in a patch of rushes near a stream that runs alongside
the path. It flew up in front of us and we got a very clear view of
its lovely plumage.
Three days later (28th
December) during a walk along the Caldon Canal between Froghall and
Consall I watched a Grey Heron wrestling
with a small mammal. I could not tell what species it was, but I
watched as the unfortunate creature struggled to free itself from the
heron's beak! It didn't succeed.
Grey
Herons are, of course, commonly observed in suitable habitat pretty
well all over the British Isles, however the other two heron species
are not so often seen. Bitterns were once extinct in the British
Isles, their demise being due to habitat damage and human
persecution. Then, following concerted work to improve certain areas
for Bitterns they have now started breeding here once again, mostly
on nature reserves. Britain also hosts an influx of overwintering
Bitterns from mainland Europe, and I expect the bird we saw was one
of these (there had been sightings of a Bittern on the nearby
Tittesworth Reservoir about the same time and maybe this was the same
bird). The Little Egret is a more recent colonist, first breeding in
the south of Britain in the late 1990s. The British Isles are its
most northerly breeding area and, with the advent of a warming
climate, their numbers and range are expected to expand.
Dipper and
Blackcap.
I was pleased to spot a
Dipper in Deep Hayes Country Park on 11th January.
These birds need unpolluted streams and rivers (i.e. not enriched
with nutrients and not acid) in order for there t be sufficient
invertebrate prey. So this bird, which was the first I have ever
spotted in that location, was a sign that the stream through the
nature reserve is in relatively good condition.
Dipper.
Mike Tunnicliffe of
Alton has had a Blackcap visiting
his garden feeders. Accoring to the BTO's Bird Atlas 2007 – 11 the
incidence of Blackcaps visiting gardens during winter peaks in late
January to February, so Mike's observations seem to fit this trend.
Up
until the 1990s Blackcaps were considered to be summer visitors to
the British Isles, just coming here to breed and then returning to
their southern European and W. African home for the winter period.
Then in the 1990s it was noticed that some birds were overwintering
here too. Genetic studies showed that these birds were actually from
breeding populations central Europe that had developed the habit of
overwintering in Britain as our climate warms and is thereby more
able to provide food for these birds during the harsh weather. As the
spring arrives these birds will return to Europe to breed and will be
replaced by birds from France, Spain and W. Africa.
Female Blackcap by Terry Eyre.
Brookleys
lake
Brookleys
Lake is the largest of a series of pools which to me look as if they
have been artificially created by widening sections of a tributary of
the Churnet, perhaps for industrial or amenity purposes. There is a
former sand quarry near by and I wonder if the largest pool
(Brookleys Lake) was a site of sand extraction (if anyone knows more
about this I would be pleased if they will let me know). The water
bodies are relatively large having a surface area of about 5km,
making them in total less than half the size of Rudyard and
Tittesworth Lakes. They are located between Wooton and Alton and are
near Farley Hall. In fact the tributary passes through the grounds of
Wooton Park where it is widened to form Canada Lake. I think this
location may be significant because the lake appears to be an
important overwintering site for certain ducks. For instance on 24th
December 2014 I saw about 50
Mandarin and
200+ Mallards on
the lake. I suspect this is the stronghold for mandarins in the
Churnet Valley area and I think these birds may be the descendants of
birds acquired for the grounds of the big houses (Alton Towers,
Wooton Lodge and Farley Hall) in the 17th
or 18th
century. Brankleys lake and Wooton Park and Lodge are owned by JCB
however there is a public footpath passing by the lake and through
the edge of the private grounds of Wooton Lodge. It is worth a look
to wee the large flock of Mandarin ducks, and who knows what else you
might see?
Brookleys Lake near Alton.
Here
is a lovely series of short nature programmes on BBC Radio
4http://www.bbc.co.uk/programmes/b04xnczz.
It is Brett Westwood talking about his birding diary which he started
when he was 15 years old. It will be available on the BBC iPlayer
until the start of February so you can listen to it there should you
want.