Hello Mick and everyone,
I've had another listen to the mystery call and I agree with Mick that the
double trill on two pitches certainly sounds like the last half of a Rose
Robin's call although how it manages to penetrate the general noise of the
forest in that recording is interesting because it is usually a fairly soft
sound.
I've had a careful listen to all my recordings of Rose Robins (not yet on my
website) and the only difference is that the "mystery " call is a bit longer
and slower sounding. The difference in pitch between the two parts of each
phrase is the key - quite distinctive. Importantly, the regular interval
between the calls is just about right for a Rose Robin.
Dave Stewart also made an important point - on the date in question, Brush
Cuckoos should not have returned to Sydney from migration.
Which brings me to to an important point that I have made in the "Recording
Bird Sound " section of my Resources page - don't make recordings of birds you
can't see if you want to document them properly.
What the identity of this bird was we'll never be absolutely sure of, and it
really doesn't matter.
Cheers
Graeme
On 08/09/2012, at 6:53 PM, Mick Roderick wrote:
> Hi Peter (Graeme, Marc et al),
>
> This has been bugging me...I've listened to that call over and over now!
>
> I was one of the original supporters of Rose Robin (not Pink, which I think
> was a typo you made Peter) and no, I haven't changed my mind - I still think
> it belongs to a Rose Robin. I can hear a suggestion of the female Brush
> Cuckoo call (especially in the first call) but it still just leaves me
> thinking it's a Rose Robin, albeit not 'typical' (perhaps a young bird
> learning the ropes?). There is a lot of variation in Rose Robin calls, which
> is evident from the various recordings I have been accessing during this
> exercise (the one on Graeme's website is a very interesting one for example).
>
> I'm sure I'm hearing the "chip, chip, chip-chip" lead-up-to-the-trill call in
> there, consistently before the trill, but admittedly not immediately before
> it.
>
> Also, the fact that there is a "double-trill" and importantly, on two
> pitches, leans more to the robin I would have thought.
>
> And the regularity that the call is made (at even intervals only a few
> seconds apart) pushes me to the robin.
>
> One thing that worries me though is Marc's confident assertion that the
> cuckoo is the call he heard on the day.
>
> Gulp...."help" Rose Robin supporters?!? ;-)
>
> Mick
>
>
>
> From: Peter Shute <>
> To: "" <>; ""
> <>; ""
> <>; ""
> <>
> Sent: Friday, 7 September 2012 6:42 AM
> Subject: Re: [Birding-Aus] Mystery Bird Call - Royal National Park, NSW\
>
> I had no idea female Brush Cuckoos made that call, and I agree it's closer
> than Pink Robin, which seems to have a faster trill.
>
> This call isn't on the BOCA CD track, and isn't mentioned in P&K (maybe
> hinted at). I'd be interested to know if the others who thought it was a
> robin have changed their minds now they've heard Graeme's track.
>
> Graeme, are all those recordings yours? That's an impressive collection.
>
> Peter Shute
>
>
> --------------------------
> Sent using BlackBerry
>
|
