[NatureNS] Harrier behaviour -

From: uhoeger@dal.ca
To: naturens@chebucto.ns.ca
Date: Sun, 11 May 2008 12:53:54 -0300
References: <8RBD.3850H5G@bogan.ca>
Precedence: bulk
Return-Path: <naturens-mml-owner@chebucto.ns.ca>
Original-Recipient: rfc822;"| (cd /csuite/info/Environment/FNSN/MList; /csuite/lib/arch2html)"

next message in archive
no next message in thread
previous message in archive
previous message in thread
Index of Subjects

Index of Subjects
I would consider this display behaviour.  According to the literature at hand 
(Birder's handbook):"Courting male performs series of dives from near stall, 
incl. barrel-rolls in multiple U-shaped loops."

Cheers

Ulli

> During the migratory count, I had a Northern Harrier (male) fly by making a noise I had never heard before.  Usually I think of the Harrier flying quietly low over a field. This one was swooping up and down and doing loops in the wind over a treed lake. It's black wing tips stood out. It kept doing this many times - very odd.... then following behind was another lighter colored Harrier flying sedately low and level over the trees.
> 
> Can this be considered a display?
> 
> Incidently, I had a reasonable day with 45 species and 400 birds, in the middle of the Valley.
> 
> Larry Bogan   -    larry@bogan.ca       902-678-0446   http://www.bogan.ca
> 6539 Brooklyn St, Cambridge Station, N.S. B0P 1G0
> 
> 

next message in archive
no next message in thread
previous message in archive
previous message in thread
Index of Subjects