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A little correction: The 'head down' display is a know threat display of
the Semipalmated Plover (not Sandpiper), and other plovers for that
matter. I don't know if Semipalmated Sandpipers have been observed doing
this. The threat behaviour I'm most familiar with for them is that of
short chases.
All the best,
Lance
________________________________
From: naturens-owner@chebucto.ns.ca
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Laviolette, Lance
(EXP)
Sent: Monday, March 10, 2008 9:52 AM
To: naturens@chebucto.ns.ca
Subject: RE: [NatureNS] Bird behavior question
Hi Fritz,
While I haven't come across another description of Blue Jays
performing this 'head down' behaviour, it is a known threat display of
Semipalmated Sandpipers. Since this is the time of year when Blue Jays
start to perform their social displays, you've probably witnessed a
dominance display taking place along these lines. I've had up to 35 Blue
Jays in my apple tree for the last two weeks, bopping their heads and
calling, perhaps males trying to convince females to ignore the
mountains of snow in this area and begin mating and nest building. I
don't think the females are falling for it...
All the best,
Lance
===========================
Lance Laviolette
Glen Robertson, Ontario
lance.laviolette@lmco.com
===========================
________________________________
From: naturens-owner@chebucto.ns.ca
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Fritz McEvoy
Sent: Monday, March 10, 2008 9:24 AM
To: NATURE, NS
Subject: [NatureNS] Bird behavior question
Hi All,
While watching two Blue Jays squabble yesterday I
noted a behaviour that I hadn't observed before. Both birds stopped
fighting and placed their heads, opposite each other, flat on the
surface of my deck where the dispute was taking place. They repeated
this action a few times holding the position for a few seconds each
time. One bird then flew off and the remaining bird did the action one
more time before leaving.
Has anyone ever seen this behaviour? What was the
meaning of this odd behaviour? All the best.
Fritz McEvoy
Sunrise Valley CB
________________________________
Snap and Share. From your phone to your space. Post
your pics here. <http://g.msn.ca/ca55/210>
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<DIV dir=ltr align=left><SPAN class=087252814-10032008><FONT face=Arial
color=#0000ff>A little correction: The 'head down' display is a know threat
display of the Semipalmated Plover (not Sandpiper), and other plovers for that
matter. I don't know if Semipalmated Sandpipers have been observed doing this.
The threat behaviour I'm most familiar with for them is that of short
chases.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=087252814-10032008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=087252814-10032008><FONT face=Arial
color=#0000ff>All the best,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=087252814-10032008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=087252814-10032008><FONT face=Arial
color=#0000ff>Lance</FONT></SPAN></DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma><B>From:</B> naturens-owner@chebucto.ns.ca
[mailto:naturens-owner@chebucto.ns.ca] <B>On Behalf Of </B>Laviolette, Lance
(EXP)<BR><B>Sent:</B> Monday, March 10, 2008 9:52 AM<BR><B>To:</B>
naturens@chebucto.ns.ca<BR><B>Subject:</B> RE: [NatureNS] Bird behavior
question<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff>Hi Fritz,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff>While I haven't come across another description of Blue Jays
performing this 'head down' behaviour, it is a known threat display of
Semipalmated Sandpipers. Since this is the time of year when Blue Jays start
to perform their social displays, you've probably witnessed a dominance
display taking place along these lines. I've had up to 35 Blue Jays in my
apple tree for the last two weeks, bopping their heads and calling, perhaps
males trying to convince females to ignore the mountains of snow in this area
and begin mating and nest building. I don't think the females are falling for
it...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff>All the best,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
color=#0000ff>Lance</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=517364213-10032008><FONT face=Arial
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