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Waxwings

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Old Wednesday 17th November 2010, 10:44   #1
KenM
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Waxwings

I am wondering whether we are currently experiencing an 'Irruption' (my interpretation of the word..is occuring in 'reasonable' numbers..whatever that might be?), as opposed to an 'Invasion'...which would suggest larger numbers.
For example, during the severe winter of '46/'47 c12,000 birds were estimated in the UK, with birds occuring in London between Dec-Apr, and this was collated by a much smaller band of observers as compared to today, most of whom would also have been without private transport.

Speaking as a Londoner, I can recall encountering Waxwings during the winter of '62/'63 with snow on the ground for 3 months! (unfortunately I don't have any figures for this period), i.e. as to numbers and when they first started to occur in the South. Currently there appears to be a North-South divide and I am wondering if the South will enjoy good numbers as in the previous 'Invasion'...later in the year?
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Old Wednesday 17th November 2010, 10:59   #2
Andrew Whitehouse
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Given that, as you say yourself, birds move from north to south in most years we get large numbers of Waxwings then, as this is already happening, I see no reason for it not to continue. As there have clearly been several thousand birds arriving into Scotland over the past month I think invasion is probably appropriate, at least for the northern half of Britain.
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