It is a well known fact that 86.3% of all statistics are invented! But seems a reasonable analysis, once you assume that all RSPB members are "birders" - and since we don't know how to define a birder (and not all birders would belong to RSPB) then it's probably close to the truth. Doesn't mean they are all going birding on that particular flight though.
2008/5/21 Andrew Taylor <>:
On Wed, May 21, 2008 at 01:36:44PM +1000, Sean Dooley wrote:
> There is an oft-quoted stat that on every international flight taking off
> from Heathrow there are on average four birdwatchers. I was wondering
> whether anyone had a source for this stat.
number of RSPB members = 1000000
UK population = 60000000
estimated passengers/plane = 240
240*1000000/60000000 -> 4
You can cite birding-aus now
Andrew
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