So I take it John, that aerial foraging is taking stationary(ish)
objects while on the wing? While hawking is taking moving objects,
particularly insects in flight? Makes some sense.
Welcome Swallows love our STPs. At every above ground plant I've been
to, the Swallows are doing incredibly well. Penrith STP for example
supports a population well in excess of 100 swallows. They love the
settling ponds, taking floating flotsam off the surface. It all looks
incredibly unsavoury to me, but I'm not a Swallow.
Eb
On 11/17/08, John Leonard <> wrote:
> Sorry, this article
>
> http://www.cooper.org/awards_and_grants/painton_%20papers/p1981Fitzpatrick1980.pdf
>
> John Leonard
>
> 2008/11/17 John Leonard <>:
> > This article about the foraging behaviour of the Tyrant Flycatchers of
> > the New World distinguishes aerial hawking from aerial foraging
> > (bottom of page 2) and prefers the term 'screening' for the latter.
> > The author is following an earlier article by Emlen, which I can't
> > find online.
> >
> > I can't see where this meaning for 'screening' comes from, and the
> > verb has lots of other meanings which are not connected to this
> > meaning, so it seems a poor choice.
> >
> > John Leonard
> >
> > 2008/11/16 Colin Scouler <>:
> >> Hello all,
> >>
> >> Referring to the foraging techniques of Welcome Swallows, HANZAB says:
> >> "Forage aerially, taking prey by sallying or screening..."
> >>
> >> I can't find the term "screening" in the glossary, and none of the
> >> dictionary definitions seem to fit.
> >>
> >> Can someone explain what "screening" means in this context?
> >>
> >> Thanks,
> >> Colin Scouler
> >> ===============================
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> >> birding-aus.blogspot.com
> >>
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> >>
> >
> >
> >
> > --
> > John Leonard
> > Canberra
> > Australia
> > www.jleonard.net
> >
>
>
>
> --
> John Leonard
> Canberra
> Australia
> www.jleonard.net
> ===============================
> www.birding-aus.org
> birding-aus.blogspot.com
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--
Evan Beaver
Lapstone, Blue Mountains, NSW
lat=-33.77, lon=150.64
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