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Old Monday 16th October 2017, 08:14   #1
KenM
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UK Hawfinch occurence last weekend....?

Presumably other people may have noticed the "incredible" nos. of Hawfinches reported over this last weekend, from Shetland to Scilly and perhaps embracing another 10+ sites throughout the realm. I believe multiples of up to 6 at least reported (Juniper Bottom, Surrey), almost certainly from the near continent, perhaps an "invasion year" without precedent...is taking place?

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Old Monday 16th October 2017, 08:24   #2
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Hmmm, that could explain why I'm not seeing many over here when I usually would be!
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Old Monday 16th October 2017, 08:55   #3
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Where are they going, though? Most reports are of birds flying over various locations and in various directions.
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Old Monday 16th October 2017, 08:57   #4
KenM
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Hmmm, that could explain why I'm not seeing many over here when I usually would be!
Perhaps their arrival here....forebodes a hard Winter from the East?
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Old Monday 16th October 2017, 09:14   #5
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I got bored counting on RBA, but over 750 birds reported since Friday. High counts on Scilly, Surrey and London.
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Old Monday 16th October 2017, 09:20   #6
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The Col D'Organbidexka has over 1.500 on migration this year already...
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Old Monday 16th October 2017, 09:23   #7
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Wow superb, i hadn't realised! I'll keep my eyes and ears open..
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Old Monday 16th October 2017, 11:27   #8
KenM
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I got bored counting on RBA, but over 750 birds reported since Friday. High counts on Scilly, Surrey and London.
Hawfinch...this year's Yellow-browed Warbler? The numbers involved are clearly unprecedented, and as such do they reflect an extremely good breeding season, and or failure with their preferred food diet at this time (berries ?). As I assume that their seed requirements Hornbeam, Beech mast, Ash keys, etc would be their mainstay, much later during the harder Winter months.....definitely food for thought.
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Old Monday 16th October 2017, 12:08   #9
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from casual observations (no bins) I had several fly-over Hawfinches near Freyburg, Germany on Saturday, mixed in with other migrating passerines all heading SW.
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Old Monday 16th October 2017, 12:29   #10
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Perhaps their arrival here....forebodes a hard Winter from the East?
It'll be related to food supplies, not forthcoming winter weather
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Old Monday 16th October 2017, 12:35   #11
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It'll be related to food supplies, not forthcoming winter weather
Quite likely a shortage of food indeed...

Also records from Irish south and southeast coasts these past few days, so seems a displacement of some description is taking place..
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Old Monday 16th October 2017, 13:01   #12
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101 reported to RBA so far today...
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Old Monday 16th October 2017, 13:09   #13
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It'll be related to food supplies, not forthcoming winter weather
We already discussed the berry crop and it's legendary connection with the severity of the coming winter on another thread, massive berry crops in Russia. Hoping we'll get some Pine Grossers again!



A

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Old Monday 16th October 2017, 21:51   #14
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It's quite a good year for Hawfinch over my German vismig spot (in use since 2011): almost 100 birds (0.7 per hour from July), which is only matched by 2012. I normally have 0.1 to 0.2 per hour in autumn.

Numbers in the Netherlands mirror this (although the difference is less marked): http://www.trektellen.nl/species/tre...nguage=english

An invasion could be good news for the British breeding population, as I have understood this tends to be boosted by European immigrants (of course I can't find a source for that on-line...)
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Old Monday 16th October 2017, 22:49   #15
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It's quite a good year for Hawfinch over my German vismig spot (in use since 2011): almost 100 birds (0.7 per hour from July), which is only matched by 2012. I normally have 0.1 to 0.2 per hour in autumn.

Numbers in the Netherlands mirror this (although the difference is less marked): http://www.trektellen.nl/species/tre...nguage=english

An invasion could be good news for the British breeding population, as I have understood this tends to be boosted by European immigrants (of course I can't find a source for that on-line...)
Yes...the European immigrant boost is a most welcome (albeit temporary affair), as the relatively uncontrolled North American import Carolinensis soon reduces any gains to pre-irruption levels.
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Old Tuesday 17th October 2017, 01:43   #16
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Yes...the European immigrant boost is a most welcome (albeit temporary affair), as the relatively uncontrolled North American import Carolinensis soon reduces any gains to pre-irruption levels.
Ken, I must be missing something obvious. Could you enlighten me on Hawfinches imported from North America? Is there a captive breed of some sort?
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Old Tuesday 17th October 2017, 06:10   #17
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Ken, I must be missing something obvious. Could you enlighten me on Hawfinches imported from North America? Is there a captive breed of some sort?
Ken is referring to Grey Squirrel as carolinensis. Its Scientific name is Sciurus carolinensis. As a result, he is suggesting that the Hawfinch decline is as a result of predation by Grey Squirrel.

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Old Tuesday 17th October 2017, 07:44   #18
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It'll be related to food supplies, not forthcoming winter weather
My aunt, in middle Finland, has said they have had an awful autumn - lots of rain and wind.

Already there are big numbers of Yellow Browed Warblers in Spain...
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Old Tuesday 17th October 2017, 07:51   #19
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Interesting just checked Organbi for previous years

2017 - current - 2052
2016 - 0
2015 - 737
2014-2011 Less than 5 each year

Does represent a big increase...
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Old Tuesday 17th October 2017, 08:47   #20
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Indeed: if I can manage four ( 3 + 1 ) on my VERY inland patch, then those numbers must represent the tip of the iceberg.
Incidentally all mine were heading roughly North - perhaps local movements following influx (?)
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Old Tuesday 17th October 2017, 08:53   #21
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Interesting just checked Organbi for previous years

2017 - current - 2052
2016 - 0
2015 - 737
2014-2011 Less than 5 each year

Does represent a big increase...
Some amazing stats. rosbifs!
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Old Tuesday 17th October 2017, 09:00   #22
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I'm wondering if timing plays a part. Does anyone have any stats on 'usual' movement time for these birds?

The Organbi figures are amazing in that you could miss an odd one but not 100's so it would be interesting to see if they are a later migrant ie when the counters have gone home. More November perhaps.

I know that the Black Kites were on average earlier this year - the peak day is usually 4/5th August and this year was July 29th...

EDIT - just checked 2015 (only other year with meaningful numbers) and the peak was the end 1/3 of October, with about half in that time (from the 20th onwards)...

Last edited by rosbifs : Tuesday 17th October 2017 at 09:04.
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Old Tuesday 17th October 2017, 09:20   #23
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above average numbers here too...though I haven't seen one yet
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Old Tuesday 17th October 2017, 09:39   #24
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My aunt, in middle Finland, has said they have had an awful autumn - lots of rain and wind.
The whole summer in St Petersburg, not that far away, was not good at all. We had one really nice week at the end of July and that was about it.



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Old Tuesday 17th October 2017, 10:12   #25
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In keeping with the current trend, albeit their occurence is not unknown in my neck of the woods, my first conclusive bird of the year was a flyover on Sunday 15th going East...with this mornings sightings at 9.25am going South, and 9.41am going North.East, thus old Coccothraustes is certainly on the move. It will be interesting to see if these UK sightings are just purely seasonally transient, or convert to good numbers overwintering....we shall see.
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