-----Oorspronkelijk bericht-----
Van: Lars Svensson <lars.svensson-lullula@EBOX.TNINET.SE>
Aan: EUROBIRDNET@LISTSERV.FUNET.FI <EUROBIRDNET@LISTSERV.FUNET.FI>
Datum: donderdag 21 september 2000 1:15
Onderwerp: [EBN] SV: [EBN] Honey Buzzards
One has to admit Internet offers a lot of fast information. For instance, you
can go to www.skof.se and
then choose English language and then click 'Falsterbo Bird Observatory' and get 50 pp. in English about
the migration. Anyone speculating in influxes from Scandinavia could start here. For instance, you will see
that during the last week, 500+ Honey Buzzards migrated. This week has started
much more quietly.
Good hunting! Lars Svensson
From: Catley.G.1073 To:
EUROBIRDNET@LISTSERV.FUNET.FI Sent: Thursday, September 21, 2000 12:20 AM Subject: [EBN] Honey Buzzards
Today September 20th following a day of easterly winds and torrential rain there
was a large southerly movement of
juvenile Honey Buzzards through eastern England peaking with 25 south at Gibraltar Point Lincs and a possible
total of 60+ birds. The last time I was at Falsterbo in the last week of September and first in October we only saw 50
Honeys in the two weeks. Does anyone have any idea where these east coast birds
may have originated---other
arrivals in the fall, eg Tawny Pipit, Red-breasted Fly and few Scandinavian
migrants eg Redstart? may suggest an
origin other than Scandinavia. An observations suggestions would be welcomed.
Graham Catley
From: Brian Unwin <bunwin@lineone.net>
To: <ukbirdnet@dcs.bbk.ac.uk>; <EUROBIRDNET@listserv.funet.fi>
Sent: 24 September 2000 07:30
Subject: [UKBN] Movement of Honey Buzzards
While some will continue to disagree no doubt, I am sticking with my theory that
this unprecedented influx - now, even allowing for duplication, clearing
involving hundreds of Honey Buzzards (Pernis apivorus) - involved birds being
blown from a region of Europe much further south than Scandinavia.
Apart from a very few reports from Orkney and Shetland and Aberdeenshire, North
Tyneside has been the northern cut-off point for the influx and the majority of
arrivals over 20th-21st were between Yorkshire and East Anglia.They arrived in
the teeth of south-easterly gale and, in simple terms, a line drawn south-east
from Linconshire the influx epicentre, takes you to | Holland. Had they been drifted directly from Scandinavia and
if the wind had been
easterly or north-easterly I would have expected arrivals much further north,
but the plain fact is there have been none (of which I am aware) between
Tyneside and Aberdeen and only extremely few on the Northern Isles. Also reports
from Falsterbo indicate only very small numbers of birds passing over the past
week. So, the way I see it, everything points to the influx involving hundreds of
birds, which had crossed from Sweden to Denmark much eartlier in the month and
had advanced a good way further south to somewhere like Holland, being drifted
in a north-westerly direction towards the coast of eastern England in a south-
easterly gale.
Any notion that these might be British-bred birds can have no foundation. The 1998 Rare Breeding Birds Report referred
to 17 pairs producing at least 12
young. Even allowing for under-reporting then and an increase since, there is no
way the very large number of juv Honey Buzzards recorded over the past four days
could have been home bred. The spread of records from Sept 18 and particularly
the 20th put out on Bird Guides Online now covers TEN PAGES. They are in the
above attachment which vividly shows the breathtaking scale of this influx.
Brian Unwin e-mail: brian_unwin@bigfoot.com website:
http://welcome.to/Brian_Unwin
From: norman van swelm <Norman.vanswelm@wxs.nl>
To: Brian Unwin <bunwin@lineone.net>; <ukbirdnet@dcs.bbk.ac.uk>
Sent: 22 September 2000 19:03
Subject: Re: [UKBN] The movement of Honey Buzzards/Lost Souls
Brian Unwin wrote:
>Surerly, at least on the face of it, the arrival of these birds, the bulk of
them between the Humber and the Wash, after an south-easterly gale that began building up on the afternoon of the 19th
implies that they may have been drifted
>across from somewhere like Holland. The wind was certainly blowing from that
direction.
>Many of the birds reported actually came in off the sea soon after first light
and certainly the ones recorded in my
>area, Tyneside, were considered to be in an exhausted state - implying they'd
been in the air through the night.
>Bearing in mind the time the storm began, it suggests to me, at least, that
they became caught up in the weather
>system on Tuesday afternoon somewhere on the Continent before they could find
roost sites.
There is little doubt these birds came via Holland, SE winds became very strong Bft 6 during the afternoon of
Tue 19th September and the number of raptors
reached a peak in the afternoon on the Maasvlakte: no Honey Buzzards but
Sparrowhawks and Buzzards came in groups, Merlin, Peregrines, Ospreys in singles
as did a dark morph Montagues Harrier (never saw one before, wonderful bird!) at
Flushing. Honey Buzzards were seen into dusk. These birds were doubtless blown
in from Germany. Similar winds are expected this weekend so a Raptor Alert is in
place! Norman
Subject: Re: [EBN] Honey Buzzards
From: Peter Finke <Peter.Finke@T-ONLINE.DE>
Date: Mon, 25 Sep 2000 09:48:04 +0200
Graham Catley, Brian Unwin and Graham Elkins wrote on irregular Honey Buzzard
migration in Britain.
At other places they are missing: Having seen groups of Honey Buzzards on their
southward migration every year here in eastern westphalia (Germany), this year
there were (nearly) none. Perhaps some people from other regions further west
of Germany (The Netherlands, Belgium, France) could report us of numbers
unusually high? Where have "our" birds been drifted?
Dr. Peter Finke e-mail off. mailto: peter.finke@uni-bielefeld.de
fon priv. (49-0)5206-1466 fax priv. (49-0)5206-2838
Bielefeld university (theory of science and biolinguistics) and
Witten-Herdecke private university (evolutionary cultural ecology)
