On 21/05/2008, at 2:52 PM, Andrew Taylor wrote:
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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