The abundance of Gang-gang Cockatoos in Canberra
typically increases through the months January to April. Also for that
matter exactly the same comment applies to the Spotted Pardalotes (as clearly
shown for both in the GBS Report). I would say then that your observations
are a reflection of the typical, in that the birds are starting to return. So
that is fine. This leads me to comment on the article by "A. Stentoreus" in CBN
30(4):166-168. That article seemed to be suggesting that for some observation to
be "significant", it needed to be very unusual. I disagree. I would suggest that
it is the things that are typical, that are the "significant" things in biology.
The rare things don't matter much. That is why for example the GBS Report was
designed as a summary of the typical trends of our bird populations. It was
important to give prominence to the usual trends of common species. It is not -
as are many Annual Bird Reports of other places - a listing of rarities.
Rare species contribute little to the ecology. Some of that type of document do
not mention the common species and so in years to come, people may think those
common species did not occur there.
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