The demise of the Passenger Pigeon was assisted, or at least hastened, 
by its own social needs.  Apparently they did not reproduce as 
successfully in smaller flocks
Eric Jeffrey
Falls Church, VA
USA
-----Original Message-----
From: Ricki Coughlan <>
 To: Cas and LISA Liber (& family) <>; birding 
aus <>
Sent: Thu, 2 Mar 2006 09:06:06 +1100
Subject: Vanishing House Sparrow wrap-up
   The passenger Pigeon is a slightly different case to that of the 
House Sparrow. However the Passenger Pigeon suffered from changes to 
its habitat as well as shooting. It is estimated that there was once 5 
billion of these birds which would fly in flocks so vast that they 
would block out the sun for hours as they passed. Their main food 
source came from trees like Acorns, Chestnuts and Beechnuts. The female 
would lay only one egg per year. for the first couple of centuries of 
european occupation, shooting, clubbing and netting took place, but the 
population was not yet large enough to have a tell-tale effect. Then 
came the railways. . .
  Between 1860 and 1870 the shooting of these birds was being carried 
out to such a degree that several millions of carcasses of these birds 
were being sent from the frontier states to the east for the meat 
market every week! Meanwhile, the great Acorn, Chestnut and Beech 
forests of the north were chopped down for timber and to make way for 
farmland and growing cities. It was all totally unsustainable. The last 
wild bird seen was in Ohio in 1900. The last captive bird died in 1914.
  It's a heartbreaking story of great ignorance and stupidity and you 
have to ask how could such a mentality exist. You might even breathe a 
sigh of relief and say "Thank God, we've changed". Sadly, I reckon we 
haven't changed one bit.
Ricki
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