Alarm calls

["david robertson" <>]

Whilst I was painting the house yesterday I heard the alarm call go up,
mostly from the Noisy Miners.  I looked up just in time to see a small
raptor flying over (Hobby or male Sparrowhawk).  I tried to remember what
the calls sounded like.  Was there anything different because it made me
wonder whether alarm calls are all the same.  We know that some animals have
different calls for whether the predator is on the ground, in a tree or in
the air but what about birds?

Some larger local predators, female Goshawk or Peregrine), would appear to
present much more of a threat that the smaller ones so does the call vary or
is it one call fits all?

David Robertson

Adelaide