Facts about the RSPB 
Over a million members, including over 170,000 youth members.  
A staff of over 1,300 people and over 13,000 volunteers.  
Resources available for charitable purposes in 2007 was £78.6 million.  
200 nature reserves covering 130,000 hectares home to 80% of our rarest or most threatened bird species.  
A UK headquarters, three national offices and nine regional offices.  
A local network of 175 local groups and more than 110 youth groups.  
At least 9 volunteers for every paid member of staff.    
I have just copied the above information from the RSPB site, so they have a million members at £36 per annum subs, that adds up to a tidy income....WOW copied from else where