-----Oorspronkelijk bericht----- Van: Lars Svensson Aan: 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 To: ; 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 To: Brian Unwin ; 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 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)