Help ! Black Swan aggression

To: birding-aus <>
Subject: Help ! Black Swan aggression
Date: Fri, 19 Apr 2002 16:36:00 +1000
At Elsternwick Park in SE Melbourne there is a 4? year old
lake about 200m long and 80m wide with an island. Swans have
nested for the last 2 years with only one pair present.
About 2 weeks ago they had a new brood. 

Two days ago another pair arrived and seem to have the
original pair and their cygnets bailed up in a corner of the
lake. There has been some fighting and apparent attacks on
the cygnets (with one possibly killed).

1. Is this common behaviour ?

2. Any suggestions about how to protect the cygnets ?

Many thanks for any ideas

Michael Norris
Bayside Friends of Native Wildlife

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