|
Press Releases - May/June 2005
Item 2
7th June 2005
News Release 2005/06/16
Out of Africa – summer visitors
in trouble
Thousands of birdwatchers
across Britain and Ireland who have contributed to the online
bird-recording project 'BirdTrack' have recorded fewer Swallows,
Chiffchaffs, Willow Warblers and Spotted Flycatchers this spring.
Every spring brings a predictable arrival of migrant birds to our
towns, cities and countryside. These birds like the familiar Swallow,
Spotted Flycatcher and Cuckoo spend the winter in Africa, south
of the Sahara and return each summer to Britain to Ireland where
the conditions here are most suitable for breeding. One of the main
benefits of heading north each spring is the predictable surge of
insects that the birds need to feed themselves and a nest of hungry
chicks.
Results from the BTO/RSPB/BirdWatch Ireland project ‘BirdTrack’
show that fewer Swallows have been recorded this spring compared
with the last two years. Using lists of birds recorded on the Internet
by thousands of birdwatchers we can compare numbers year to year.
Swallow occurrence is about 15% down compared to 2003 and 2004.
Poor weather on migration, particularly in north Africa and southern
Europe meant that birds did not find enough food to re-fuel properly
after their long and difficult journey across the Sahara. For those
that reached Britain and Ireland, the cold weather in April brought
further problems.
Other species, most notably the Chiffchaff, a small warbler that
winters in North Africa and Iberia, have also been recorded on fewer
lists this spring compared with the last two years. 'BirdTrack'
shows Chiffchaffs to be about 20% down on 2003 and 2004,
whilst Willow Warbler, Whitethroat and Spotted Flycatcher are also
down. All these species are insectivorous and the recent cold and
wet weather makes it much more difficult for them to find insects.
Dawn Balmer, 'BirdTrack' Organiser commented,
“Migration and breeding are very stressful times for birds
and poor and unpredictable weather during these times can mean the
difference between life or death for birds. For some species it
might mean that they abandon breeding this summer if there is not
enough food available for them to keep in good condition. Many of
our migrant visitors will only have one breeding attempt each year
so it could prove to be an unproductive summer”.
Some of our resident species like Blue Tit and Great Tit are also
having a mixed breeding season with dead chicks found in many nest
boxes this spring. The reasons for the deaths are unclear but a
combination of poor weather leading to chilling of chicks and the
inability of adult birds to find enough caterpillars to feed the
young will have contributed.
Birdwatchers can help track the fortunes of our birds by submitting
their birdwatching lists to BirdTrack (www.birdtrack.org)
on a regular basis.
Notes for Editors
1. BirdTrack is an online bird recording scheme www.birdtrack.net
organised by BTO on behalf of BTO, RSPB and BirdWatch Ireland.
2. To register for BirdTrack visit the BirdTrack website www.birdtrack.net
and click on the 'Register for BirdTrack' link. Registering is free.
3. Birdwatchers are encouraged to enter their birdwatching lists
online to support species and site conservation at local, national
and international scales.
4. We need to gather a large number of lists at all times of the
year. Complete lists (all species seen and heard) are preferred
but incomplete lists and casual records will also help build our
understanding of populations.
5. Results produced by BirdTrack will help us to map the migration
and movements of birds and monitor of scarce birds in Britain and
Ireland. Maps are available from
for use in publications.
6. BirdTrack follows on from the successful Migration Watch project
that looked at spring migration in 2002-2004. BirdTrack will run
all-year and gather information on spring and autumn migration.
We know very little about the timing of arrival and departure of
winter visitors and this is just one area where BirdTrack will provide
useful information.
7. Most of our summer visitors winter in Africa, ranging from the
tip of South Africa for Swallow to West Africa for the likes of
Sedge Warbler and Whitethroat. Information from bird ringing suggests
that Willow Warbler winters in the Gulf of Guinea; around the Ivory
Coast and Ghana. In contrast, Lesser Whitethroat is the only warbler
to winter in East Africa with records from Egypt, Sudan, Chad and
Ethiopia.
Images are available from
For further information please contact:
Dawn Balmer or Graham Appleton
BTO, The Nunnery, Thetford, Norfolk, IP24 2PU.
Tel: 01842 750050
E-mail:
or
Grahame Madge
Media Officer, Conservation PR
RSPB, The Lodge, Sandy, Beds SG19 2DL
Telephone: +44 (0) 1767 681577 Mobile and out of hours contact:
07702 196902
Pager: 07654 344078
E-mail:
For information about BirdTrack in the Republic of Ireland
contact:
Olivia Crowe
BirdWatch Ireland, Rockingham House, Newcastle, Co. Wicklow, Ireland
Tel: 353 - 1 - 2819878
Email:
|