Curlew capers

[Gary Wright <>]

Great video, Steve.  HANZAB  states that oystercatchers bash pipis on sand presumably to slightly open so that they can get the bill in.   Beach Stone Curlews could have extended this or watched Pacific Gulls dropping things onto rock to open them.  My wife also wondered if prey item for Beach Stone Curlews like crabs had fallen off leading to exploring other prey items?

Gary

On Tue, 14 Jul 2020 at 07:33, Steve McBride <> wrote:

Hi Michael,
I thought maybe the Beach Stone-curlews learned about finding & digging up
the pipis from the Pied Oystercatchers, but I haven't got any ideas how they
learned to break them open on a rock.

The video was taken with a Nikon P1000, a small sensor super-zoom.  I was
back some distance & zoomed in, to avoid disturbing the action.
The original video was taken at best camera video resolution available, i.e.
2160/25p (3840 x 2160), aka 4K.
I edited the video with (Windows Live?) Movie Maker, which has maximum
output resolution of Full-HD(1920 x 1080).
The camera was handheld, hence a little shaky, but in the editing software I
applied 'Anti-shake & wobble correction', which uses cropping to help reduce
the camera shake.
After the bird carried the pipi up the beach & started bashing it on the
rock, I briefly stopped the video, to steady my position a little, before
restarting.
I also edited a little of the smashing out, before combining the 2 files,
but it's all one event, except at the very end where I pan across to the 2nd
bird.

Cheers, Steve

-----Original Message-----
From: Birding-Aus <> On Behalf Of Michael
Hunter
Sent: Monday, 13 July 2020 5:08 AM
To:
Subject: Curlew capers


This is an astonishing video Steve, thank you.  The Beach Stone Curlews
Obviously well practiced  in smashing the Pippies   and very persistent.

Two queries;

          Could they have  initially learned by copying some other spp. ?
(Presumably it is a learned behaviour )
           ( We have Aus Ravens softening up  large lumps of hard, stale and
otherwise inedible  multigrain bread by dropping it into the birdbath a few
metres away .
             And of course Kookaburras and Grey  Butcherbitds  among others
softening / downsizing  food by repeatedly smashing it onto the  ground.)

    What camera/phone did you use.  The quality of the video was very good.

                  Thanks again

                  Michael Hunter
Sent from my iPhone
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