birding-aus
I would not get too concerned. One fortnight is not a big sample size. Birds
come and go. From here in Canberra, the Superb Fairy-wrens have undergone a
spectacular and steady increase in numbers over the past 17 years, but that
is based on 44046 observer weeks in 1099 observer years of data and the
Superb Fairy-wrens being recorded on 723 of those observer years (ie records
of birds at a site in a year for anything from one to 52 weeks). In
individual sites certain species of birds disappear for a while but the
broad trend is much bigger than what happens at one location.
-----Original Message-----
From: Victoria Quinton <>
To: <>
Date: Sunday, 21 February 1999 19:31
Subject: birding-aus absence of blue wrens
>birding-aus
>
>My father has noticed the absence of usually-present superb blue wrens at
>his property in Red Hill, Mornington Peninsula, Victoria during the past
>fortnight.
>
>Has anybody any suggestions as to the cause of this?
>
>
>
>Victoria Quinton
>
>http://www.alphalink.com.au/~mermaid
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