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| Whitethroat
by Stephen Lilley |
Passage
visitor/fairly uncommon breeder |
2003 |
Recorded
between 17th April when one was at Elland Gravel Pits and 14th
September when one lingered at Stockbridge. During the summer
month’s birds were noted at Marley and Esholt Sewage Works,
St.Ives and White Wells with breeding being confirmed at both
Stockbridge and Gallows Hill. Birds were also located at Paul
Clough and Denholme Clough as well as Elland Gravel Pits, which
hosted the year’s highest count of eight birds during June. |
2004 |
The first record of the year was on 24th April
at Shipley, followed by another at Gallows Hill the next day. During
May this species was found at various sites including Elland Gravel
Pits, Otley Chevin, Barden Moor, Knotford Nook and Toad Holes Beck.
Breeding occurred at Stockbridge, Gallows Hill and probably at
Marley Sewage Works.
During
July and August presumed passage birds were noted at Doe Park
Reservoir, Otley Wetland, Leeming Reservoir and East Busk Lane,
Otley. The year’s
final sighting, again presumably a bird on passage, was at Cold
Edge Dams on 2nd September. |
2005 |
There is reason to suggest a decline in the local
fortunes of this species as well.
As recently as 2002, between 60 and 70 birds were reported from
26 locations, with a maximum of fourteen birds at one particular
site. This year, the comparable figures are 34, 14 and five, this
maximum having been noted at Elland Gravel Pits in May, though
three birds were seen at Marley Sewage Works and Bingley South
Bog in the same month. Loss of habitat is certainly a feature at
the key 2002 site, and may be elsewhere, but the position clearly
needs to be carefully monitored.
The first arrival, at Gallows Hill, Otley, on 23rd April was almost
identical to last year, and the final sighting was on 11th September,
a typical date. Within this period, May provided most of the sightings,
the majority of which were in the south of the recording area,
with only six originating in Wharfedale.
Evidence of breeding came from Elland Gravel Pits, Stockbridge,
where a juvenile was seen on 17th July, and Gallows Hill, which
had two young birds on 19th August. |
2006 |
Whilst
numbers are clearly down on previous years, and including as
recently as 2002, the decline highlighted in last year’s
Report seems at least to have been halted during 2006.
Fifty-six records was, by current standards, a fairly respectable
number, as was the 21 locations involved and the probable total
number of birds (including family parties) at around 50. It is
clear, however, there is no longer a particular stronghold for
the species in the area, and the maximum number of adults seen
was three, at Marley Sewage Works and Shibden Head in May, which
month, as is so often the case, provided many of the sightings.
The first arrival, at Stockbridge on 23rd April, was on a fairly
typical date, but the last record, of two birds in Cullingworth
on 25th September, was noteworthy for its lateness and for being
an unusual garden observation. Other individuals seen in August
and September at Paul Clough, Gallows Hill, Doe Park Reservoir,
Bradup and Glovershaw were presumably on migration.
The health of the species locally is, of course, best measured
by breeding success, and, whilst on a par with last year, this
was significantly down on four years ago. Proved breeding success
was reported from Stockbridge, where two young were raised, and
Baildon Green, where a family of three juveniles were being fed
in June. A bird was also seen at a probable nest-site at Marley. |
2007 |
Whilst,
in comparison with the 1990’s, Whitethroat
has shown a marked downturn, the position seems to have stabilised
since the particularly poor showing in 2005. The statistics are
much in line with last year: there were 60 records from 26 locations
(mostly in the south), and an estimated 50 adults were seen. A
good cross section of sites was involved, including some less typical
ones, namely Baildon Moor, Yeadon Tarn and Soil Hill, where the
birds seen were clearly migrants.
The paucity of records for June and July fuel the view that the
species is little more than a passage migrant these days, and whilst
singing males and pairs were noted on a few occasions in this period,
there was little resultant breeding activity. Proven breeding came
only from Pool Paper Mills and near Low Wood, where in both cases
food-carrying was noted, Stockbridge where a pair raised two young,
and at Marley a parent and two juveniles were seen, four adults
having been present here in late April. A grounded bird on Barden
Moor on 20th April was the first of the year, and one at Stockbridge
on 6th September the last. Both are fairly typical dates. |
2008 |
Although
good numbers of singing males were reported, particularly from
the south of the area, there was only one proven breeding record:
from Stockbridge. However, observers felt it had probably taken
place at Sconce and Queensbury. The highest count was three birds
at Ben Rhydding Gravel Pits in April. |
2009 |
Up
to five birds were seen at Stockbridge, and there were many singing
males elsewhere, and apparent breeding in Otley, Caldene Fields,
Thornton, and Park Plantation. The species therefore seems to be
maintaining its presence in the area, particularly in the south. |
2010 |
After
a period of stability, there seems to have been a marked downturn
in 2010, not explained by under-recording, as this is usually a
well-reported species. There were records from only 16 locations
(many of which clearly referred to passage), just seven singing
males were noted at three sites, and the single breeding pair was
at Stockbridge. The situation needs to be monitored to establish
if this is just a temporary decline. |
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