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This Blue Jay behaviour raises for me an interesting question in terms of
"breeding status" for the Bird Atlas. For example, I see Blue Jays
(presumably males) offering food to other Blue Jays (presumably females),
long before their breeding period as defined in the Atlas documents. Does
this behaviour rate a "D" status even when it is performed in March? Or do
the Blue Jays establish pairs outside, possibly far outside, their breeding
territory. The Atlas documents indicate that the breeding period of Blue
Jays begins in the last week of April.
John
_____
From: naturens-owner@chebucto.ns.ca [mailto:naturens-owner@chebucto.ns.ca]
On Behalf Of Laviolette, Lance (EXP)
Sent: March 10, 2008 10:52 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
_____
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<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3D"Comic Sans =
MS"><span
style=3D'font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>This =
Blue Jay
behaviour raises for me an interesting question in terms of =
“breeding
status” for the Bird Atlas. For example, I see Blue Jays =
(presumably
males) offering food to other Blue Jays (presumably females), long =
before their
breeding period as defined in the Atlas documents. Does this behaviour =
rate a “D”
status even when it is performed in March? Or do the Blue Jays establish =
pairs
outside, possibly far outside, their breeding territory. The Atlas =
documents
indicate that the breeding period of Blue Jays begins in the last week =
of
April.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3D"Comic Sans =
MS"><span
style=3D'font-size:10.0pt;font-family:"Comic Sans =
MS";color:blue'>John<o:p></o:p></span