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Hi there,
I've been reading with interest the various notes about
Snowy Owls, both here and on other provincial lists. The following
note by Brian Dalzell on NatureNB was particularly interesting,
though sobering.
Patricia L. Chalmers
Halifax
Subject: Re: Fw: Invasion de harfangs: ATTENTION
From: Brian Dalzell <aythya AT NB.SYMPATICO.CA>
Date: Wed, 19 Nov 2008 14:52:03 -0400
It is my impression from previous invasions, and from research I have
done into large invasions in the past (especially in the mid-1940s),
that not one in 10 Snowy Owls will survive to return to the arctic.
Mortality from all causes is likely in the 75-95% range. Starvation
leads the way, but those that make it this far also fall prey to other
creatures of prey (who sense the weakness of the owls and attack them,
such as crows, ravens, coyotes, etc.), hit by cars, trucks, trains and
airplanes (at airports) electrocuted on power lines, broken wings from
hitting powerlines and support pylons, drowned at sea, shot by
trigger-happy hunters, etc. Yes indeed, we should give them a little
breathing room.
-----------------------------------
J. Denys Bourque, R. P. F. wrote:
> Hereunder is a word from Pierre Bannon posted to the Ornitho-QC forum. He
explains that many Snowies reaching southern latitudes this winter
are in a sad
state. So enjoy without harrassing them.
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<body>
Hi there,<br><br>
<x-tab> </x-tab>I've been
reading with interest the various notes about Snowy Owls, both here and
on other provincial lists. The following note by Brian Dalzell on
NatureNB was particularly interesting, though sobering.<br><br>
<x-tab> </x-tab>Patricia
L. Chalmers<br>
<x-tab> </x-tab>Halifax<br>
<br>
<br>
<a name="1227120935"></a>Subject: Re: Fw: Invasion de harfangs:
ATTENTION<br>
From: Brian Dalzell <aythya AT NB.SYMPATICO.CA><br>
Date: Wed, 19 Nov 2008 14:52:03 -0400<br><br>
It is my impression from previous invasions, and from research I have
<br>
done into large invasions in the past (especially in the mid-1940s),
<br>
that not one in 10 Snowy Owls will survive to return to the arctic.
<br>
Mortality from all causes is likely in the 75-95% range. Starvation
<br>
leads the way, but those that make it this far also fall prey to other
<br>
creatures of prey (who sense the weakness of the owls and attack them,
<br>
such as crows, ravens, coyotes, etc.), hit by cars, trucks, trains and
<br>
airplanes (at airports) electrocuted on power lines, broken wings from
<br>
hitting powerlines and support pylons, drowned at sea, shot by <br>
trigger-happy hunters, etc. Yes indeed, we should give them a
little <br>
breathing room.<br><br>
-----------------------------------<br><br>
J. Denys Bourque, R. P. F. wrote:<br>
> Hereunder is a word from Pierre Bannon posted to the Ornitho-QC
forum. He <br>
explains that many Snowies reaching southern latitudes this winter are in
a sad <br>
state. So enjoy without harrassing them. <br><br>
<br>
</body>
</html>
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