Rare Bird News

To: "Tony Russell" <>, "BIRDING-AUS" <>
Subject: Rare Bird News
From: "Mike Carter" <>
Date: Fri, 28 Nov 2003 18:39:17 -0000
With so much shipping around the world these days, ship assistance is 'Natural'. Capture and escape or release isn't. Neither is deliberate introduction . Even so, in most cases, it is difficult to positively know the origin of individuals. As with the Canada Goose, the question is, 'what is the more likely provenance?'. In the case of the Tree Sparrow, it is a massive leap in range from any direction.
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