Re: birding-aus returning migrants

Subject: Re: birding-aus returning migrants
From: "Niven McCrie" <>
Date: Thu, 9 Sep 1999 12:54:02 +0000
Interesting to note that some birds arrive on the same date each year.
Even more stunning that they have some kind of mechanism for
understanding leap years : ) Perhaps 'arrival dates' can be better
termed 'dates of first observation'. Unfortunately not as exciting a
term but more accurate. 

Happy birding
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