In the rather unlikely event that each of the 2 hawks
took a myna each day plus an additional myna every second day that would account
for 1095 mynas in a full year, or a myna exhaustion period of 41
years, given a finite allocation of (the premised 45,000) mynas.
However I think you would need to allow for the possibility that the myna
population would be reproducing itself over that period while the hawk effort
would be more or less constant and possibly even decreasing as myna availability
declined (getting the very last myna might be a challenge), unless of course the
(initial) abundance of mynas led to smaller territories and also more hawks over
the period, which raises the question why that has not happened already, or has
it .....? I wonder if the Kambah sparrowhawk/myna ratio does
not reflect a classical balance, gains in efficiency in capture and
evasiveness keeping pace with one another.
|
Admin
The University of NSW School of Computer and Engineering
takes no responsibility for the contents of this archive. It is purely
a compilation of material sent by many people to the Canberra Ornithologists Group mailing list. It has not been checked for accuracy nor its content verified in any way.
If you wish to get material removed from the archive or
have other queries about the list contact David McDonald, list manager, phone (02) 6231 8904 or email
.
If you can not contact David McDonald e-mail
Andrew Taylor at this address:
andrewt@cse.unsw.EDU.AU
|