DEar all Here is a very interesting comment from Stephen Debus. Shirley Cook —– Original Message —– From: “Stephen Debus” <sdebus@une.edu.au> To: “Shirley Cook” <shirleycook@skymesh.com.au> Sent: Monday, December 16, 2013 5:31 PM Subject: Re: Fw: [Birding-Aus] Alarm calls > Hi Shirley, > > I’m convinced that Noisy Miners can tell the difference between, for > example, a Brown Goshawk and a falcon (Black or Peregrine), and that > differences in their alarm calls (e.g. the ‘urgency’) reflect which > species they’re concerned about, and how much. I can now predict pretty > accurately, on the basis of the miners’ calls, which raptor (or category > of raptor danger, e.g. goshawk, Little Eagle or Brown Falcon, vs Black or > Peregrine Falcon) to expect to see in the air when the alarm goes up. At > least, that holds for a site I regularly visit for raptors where there are > lots of miners. (The miners also know one another’s individual voices and > know who is calling, about what, as established by researchers in Zoology > at UNE). > > Cheers, > > Steve > > > > > At 05:08 PM 16/12/13, you wrote: >>Anything to add?? >> >> >>—– Original Message —– From: “Paul Osborn” <passerine@iinet.net.au> >>To: <birding-aus@vicnet.net.au> >>Sent: Monday, December 16, 2013 12:15 PM >>Subject: Re: [Birding-Aus] Alarm calls >> >> >>>David, >>> >>>I posted on this subject several years ago. I used to have an office >>>overlooking bush and at about tree top level. I often heard Noisy Miner >>>alarm calls and can confirm that they do indeed have different alarm >>>calls for different situations. I initially thought that they had >>>different calls for different raptors but continued observation led me to >>>believe that the calls varied according to the proximity and degree of >>>urgency of the perceived threat. >>>Paul Osborn >>> >>> >>>—–Original Message—– From: david robertson >>>Sent: Monday, December 16, 2013 9:38 AM >>>To: birding-aus@vicnet.net.au >>>Subject: [Birding-Aus] Alarm calls >>> >>>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 >>> > > > > —– > No virus found in this message. > Checked by AVG – www.avg.com > Version: 2014.0.4259 / Virus Database: 3658/6925 – Release Date: 12/16/13 >
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