Could you provide a reference to the 'desk-based survey' and its results as would like to see the details of this if it exists.
It was in a response to an email about the Buzzards issue, which was passed to Defra for a reply, which i think has been sent out to many people who wrote in. This the reply received by a friend:
"Thank you for your email of 1 June to Richard Benyon about the Defra
research proposals looking into the impact of buzzard predation on
pheasants. I have been asked to reply.
The success of conservation measures has seen large increases in the numbers of
buzzards and other birds of prey over the last two decades. The Minister for Wildlife
celebrates that and since 2010 we have championed many new measures to benefit
wildlife across England - set out in our England Biodiversity Strategy.
In January this year, Defra formed a working group that was charged with
gathering the best available evidence on the current impact of buzzard
predation on pheasant poults and other game species. The group included a
wide range of people from both the shooting and conservation sectors and was
formed because Defra was made aware that Natural England had received
several applications to lethally control buzzards where it was alleged that
damage caused by buzzards was having an unsustainable impact on rural
businesses.
As part of the work of the group, Defra commissioned the Food and
Environment Research Agency to undertake a desk study into the available
research regarding the impacts of buzzards on game birds and other
livestock. This study recommended that more research was required and that
field studies should be undertaken to gather more evidence about the impact
of buzzards on pheasant poults and to look at how non lethal methods could
be used to prevent the damage buzzards can sometimes cause.
This resulted in proposals for field research being drawn up and it is these
proposals that have caused a good deal of public concern. In light of these
concerns we have decided to look at developing new research proposals on
buzzards to understand better the whole relationship between raptors, game
birds and other livestock.
We will collaborate with all the organisations that have an interest in this
issue and will bring forward new proposals in the near future."
I don't think many people could seriously argue with the approach Defra took, as laid out there. They seem to have done their best to please everyone and take a balanced approach to it. If I recall correctly, BTO and RSPB were actually on the working group (BTO resigned when the publicity hit the fan; but RSPB?).