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Randy,
As of this morning, out of 13 routes for which I've got this year's data (9=
received here at the office and 4 picked out from NatureNB and NatureNS), =
only one had a NSWO (I'm not counting the route with 18 owls in PEI, I thin=
k there were 3 NSWO on that one). It could be that the later surveys will p=
ick them up this year. It might be something worth looking at once all the =
data for this year are in.
Cheers,
Greg
Greg Campbell
Project Biologist/Biologiste
Bird Studies Canada/=C9tudes d'Oiseaux Canada
Address/adresse postale: P.O. Box 6227, Waterfowl lane
Sackville NB, E4L 1G6
Tel: (506) 364-5025
fax: (506) 364-5062
email: gcampbell@bsc-eoc.org
________________________________
From: naturens-owner@chebucto.ns.ca [mailto:naturens-owner@chebucto.ns.ca] =
On Behalf Of Randy Lauff
Sent: April 24, 2008 2:22 PM
To: MBBA@yahoogroups.com; naturens
Subject: [NatureNS] Saw-whet Owls
All,
Folks band Saw-whet Owls (NSWO) primarily in the fall on their southward jo=
urney, but a few hearty souls also band the northbound birds. As of earlier=
this week, the northbound migration was still strong at Whitefish Point (M=
ichigan), with over 100 NSWO's banded in one night.
If our birds are following a similar pattern, then earlier Nocturnal Owl Su=
rveys, like the one my wife and I did (zero NSWO's), may not represent this=
year's breeding population well. HOWEVER, last year was a cruddy breeding =
season here, but was very good more centrally in the continent, implying th=
at if there is strong fidelity to a nesting area, then maybe the low NSWO n=
umbers on surveys is representative (Greg - correct me if I'm wrong here - =
I haven't been keeping track but my impression of people's NOS reports is t=
hat there are low NSWO numbers). If there isn't a strong attachment to the =
breeding grounds, then perhaps some of those huge numbers of last fall's so=
uth-bound migrants may swerve this way as they come north.
It would be interesting to see the results of the NOS's plotted as number o=
f NSWO against date - i.e. are later surveys picking up more birds?
At this point, all my nest boxes for owls are empty, including the one rece=
ntly morphed into a Kestrel box...ya gotta hate when they clearcut all the =
way around your nest box tree like that...it's a real jaw-dropper. I'll be =
going up to SW Cape Breton in the next few days to check six boxes there.
Randy
_________________________________
RF Lauff
Way in the boonies of
Antigonish County, NS.
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span style=
=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Randy,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span style=
=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span style=
=3D'font-size:
10.0pt;font-family:Arial;color:navy'>As of this morning, out of 13 routes f=
or
which I’ve got this year’s data (9 received here at the office =
and
4 picked out from NatureNB and NatureNS), only one had a NSWO (I’m no=
t
counting the route with 18 owls in <st1:State w:st=3D"on"><st1:place w:st=
=3D"on">PEI</st1:place></st1:State>,
I think there were 3 NSWO on that one). It could be that the later surveys =
will
pick them up this year. It might be something worth looking at once all the
data for this year are in.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span style=
=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span style=
=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Cheers,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span style=
=3D'font-size:
10.0pt;f