Crimson Rosellas, Point Addis Victoria.

To: "Birding-Aus" <>
Subject: Crimson Rosellas, Point Addis Victoria.
From: "Paul Taylor" <>
Date: Thu, 11 Oct 2001 00:39:40 +1000
Shirley Cameron wrote:
>  1. On the  cliffs nearer to Bell's Beach we watched a pair of rosellas
> going in and out of a wide crack in the cliff face.  Is it possible they
> were nesting there?  On the cliff face nearer to Anglesea another Rosella
> was sitting on a ledge about 2 metres below the top, seemingly enjoying
> sun in a sheltered spot,  have others observed this behaviour?

Nesting is one possibility; another is that the crack contains minerals
that the rosellas were eating.  Each morning on the way to work, I see
Rock Doves and sometimes Sulphur-crested Cockatoos on the side of the
road cutting along State Circle between the New and Old Parliament Houses.
A booklet that I have, "Rocks and Fossils Around Canberra" mentions the
"State Circle Shale" formation and on top of that, the "Black Mountain
Sandstone" which is a thick marine deposit.  These date from the Early
Silurian (around 430 million years ago.)  The birds concentrate on
particular layers of rock; my guess is they are selecting those that
contain calcium and that is soft enough to dig out with their beaks.

   Paul Taylor                                  Veni, vidi, tici -
                           I came, I saw, I ticked.

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