Armed with advice received, on and off the chat line,
and having read
the field guides in advance
I refound this bird and am confident it was an
adult female Brown Goshawk.
The hints:
Goshawk
Sparrowhawk
frowns
stares
thick legs
skinny legs
magpie to currawong size
wattle bird to magpie
size
round
tail squaretail.
the lesson i have learnt is read the text in the field guides, do not just
look at the pictures.
Thanks to the many responders.
Here is a subsequent picture which shows the round tail, but the frown is
not as "obvious".
roger