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I have flocks of 10-20 Blue Jays daily at my feeders up here in Black Rock
hugs
jackie
----- Original Message -----
From: Laviolette, Lance (EXP)
To: naturens@chebucto.ns.ca
Sent: Tuesday, January 09, 2007 12:44 PM
Subject: RE: [NatureNS] size of corvid flocks
Hi Brian and others,
A few notes on fall and winter concentrations of Blue Jays and corvids.
When I was living at Greenwich in the Valley and feeding birds, I would
'see' concentrations of one to two dozen Blue Jays. However, through a small
banding study I did, I know that there were many more Blue Jays coming to
the feeders over the course of the winter than I would have thought without
the banding. It also showed that in spite of the abundant food source I had
set out, at least some of the Blue Jays I was feeding were also ranging
kilometres away to the Wolfville area to visit other feeders during that
winter.
Regarding Blue Jay migration at Brier Island, autumn flocks can be in the
order of many hundreds or more at times. This is nothing compared to the
numbers that occur at the winter roosts of American Crows. The 'traditional'
roost, whose numbers are included in the Wolfville Christmas count, can be
in excess of 20,000.
All the best,
Lance
From: naturens-owner@chebucto.ns.ca
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Brian Bartlett
Sent: January 6, 2007 6:43 PM
To: naturens@chebucto.ns.ca
Subject: [NatureNS] size
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of corvid flocks
Here in West End Halifax I find it's common to see Blue Jays alone or in
pairs, and even more often to hear them, but less common to see them in
larger groups -- such as half a dozen close together I saw a few days ago,
without binoculars so I couldn't tell if there was a mix of adults and
juveniles. While I've had so little luck with backyard feeders that I've
given up on them (having two outdoor cats is no help), I wonder if those
with feeders are accustomed to seeing larger groups of Blue Jays. I've read
that all members of the Corvid family gather at least in small groups, but
I'm wondering how large groups of Blue Jays get. Surely nothing like mobs of
Crows -- but how much larger than 1/2 dozen?
Thanks for any observations.
Brian
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<DIV><FONT face=3DArial size=3D2>I have flocks of 10-20 Blue Jays daily =
at my=20
feeders up here in Black Rock</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>hugs</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>jackie</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dlance.laviolette@lmco.com=20
href=3D"mailto:lance.laviolette@lmco.com">Laviolette, Lance (EXP)</A> =
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dnaturens@chebucto.ns.ca=20
href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</A> =
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, January 09, 2007 =
12:44=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [NatureNS] size of =
corvid=20
flocks</DIV>
<DIV><BR></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Hi Brian and others,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>A few notes on fall and winter concentrations =
of Blue=20
Jays and corvids. When I was living at Greenwich in the Valley and =
feeding=20
birds, I would 'see' concentrations of one to two dozen Blue Jays. =
However,=20
through a small banding study I did, I know that there were many more =
Blue=20
Jays coming to the feeders over the course of the winter than I would =
have=20
thought without the banding. It also showed that in spite of the =
abundant food=20
source I had set out, at least some of the Blue Jays I was feeding =
were also=20
ranging kilometres away to the Wolfville area to visit other feeders =
during=20
that winter.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Regarding Blue Jay migration at Brier Island, =
autumn=20
flocks can be in the order of many hundreds or more at times. =
This is=20
nothing compared to the numbers that occur at the winter roosts of =
American=20
Crows. The 'traditional' roost, whose numbers are included in the =
Wolfville=20
Christmas count, can be in excess of 20,000.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>All the best,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D873262416-09012007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Lance</FONT></SPAN&