Thanks for that, Merrilyn, I never knew some of those behaviours had proper
names at all, even if people use them differently. Can someone give me a
definition of "hawking". I have been assuming it's a general term for taking
anything in the air.
Does anyone know of an online list of the terms?
Peter Shute
wrote on :
> Hi Colin,
> There's a very interesting paper by Remsen and Robinson in
> Studies in Avian Biology No.13, entitled 'A classification
> scheme for foraging behavior of birds in terrestrial
> habitats'. Sally and screen are both attack behaviours
> categorized as wing-powered aerial manoeuvres.
> According to R and R, to sally is to fly from a perch and
> attack a food item that is either in the air or on a hard substrate
> like a branch. There are several subcategories of sallying, like
> sally-strike, sally-hover, etc. In contrast, to screen is to
> attack in continuous flight. Screening is both a method of
> searching and a method of attacking prey. Different authors
> use different terminology. For example, hawking can mean
> sallying to some people and screening to others. The valuable
> thing about R and R's article is that they explain their
> classification scheme in great detail and also indicate how
> other researchers use the terminology.
> Cheers,
> Merrilyn
>
> Colin Scouler wrote:
>> 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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