Hi,
>From my understanding of Isobel's original posting, she was referring to
>'forced copulation', a most interesting strategy employed by many dabbling
>ducks and others. For further information type 'forced copulation' into your
>web browser.
This behaviour is often observed at the appropriate time of the year in, for
instance , Pacific Black Duck. I do not know if Purple Swamphen employ this
type of behaviour but I suspect the observation posted by Elizabeth is more
likely to be of an aggressive adult defending territory, possibly against one
of its offspring. I say this because Swamphen mate on land, not in the water.
Chris
-----Original Message-----
From: Philip Veerman
Sent: Friday, March 31, 2017 1:23 PM
To:
Subject: purple swamp hens
I think that what Isobel refers to is male Muscovy ducks and probably some
other ducks, like Mallards, are rather aggressive (by our standards I guess)
in holding the female or whoever they think they are mating with, in that
manner or something that looks like that. I think what Elizabeth described is
just aggression and probably not connected to mating.
-----Original Message-----
From: Isobel Crawford
Sent: Friday, 31 March, 2017 11:24 AM
To:
Subject: purple swamp hens
I forgot to explain that, with Muscovy Ducks, this behaviour occurs when
mating, or attempting to.
On 31/3/17 at 11:01 AM, (Philip Veerman) wrote:
>They are aggressive creatures and often fight. As to why......
>Philip
>
>-----Original Message-----
>From: Elizabeth Compston
> Sent: Friday, 31
>March, 2017 10:17 AM
>To: Birds Canberra
>Subject: [canberrabirds] purple swamp hens
>
>Yesterday, from Bittern Hide we saw an aggressive swamp hen chasing another
>swamp hen, then pushing it under water and trying to hold it's head under
>water as it pecked it's head. The bird escaped but the chasing continued
>with more swamp hens joining in. Unfortunately we were not able to stay
>long enough to really sort things out; but there was no doubt about the
>aggressive behaviour. Why such behaviour?
>
>Elizabeth C
>****************************************************************************
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