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The History of British Birds by D W Yalden
(Oxford University Press, Oxford, 2009).
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263 pages, 76 tables, figures, diagrams and
maps.
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ISBN 9780199217519. Hbk, £55. Birdwatch
Bookshop £39.99.
Detailed information about the true
historical nature of Britain’s avifauna is hard to glean, tending to be hidden
in journals and unpublished reports. This book – a comprehensive avian
follow-up to the author’s exceptional The History of British Mammals (2001) –
aims to change this situation.
D W Yalden is best known as a mammalogist,
but he has published extensively on the post-glacial history of birds, and is
well placed to begin this discourse.
The major historical part of the book
starts where all birds start, with Archaeopteryx, and then covers the amazing
finds in the Eocene London clay, such as primitive mousebirds and turacos. A
recognisable British avifauna consolidated during the Pleistocene period
(encompassing the last 1.8 million years), but notably included an extinct
albatross species. Modern species are present en masse about 400,000 years ago,
with a typical winter bird assemblage that also included Eagle Owl, Mandarin
Duck and Red-crested Pochard. Even more recent deposits produce Cory’s
Shearwater, alongside mammals such as Hippopotamus and Spotted Hyena.
The real substance of the book covers the
last 15,000 years, a period during which Britain thawed, losing its Arctic
Foxes and Woolly Mammoths, and became separated from the Continent. Even then,
Chaffinch was the commonest bird in British woodlands, living alongside Hazel
Grouse. Great Auk is frequently found in deposits of this age. The Bronze Age
(about 4,000 years ago) saw Dalmatian Pelicans populating the Cambridge fens
alongside White-tailed Eagles.
Agriculture was fully developed by the time
the Romans set foot in England, and both Red and Black Grouse were present
throughout southern England. Native Britons appear to have eaten almost
anything that flew (including Great Northern Diver!), enabling the avifauna of
this time to be instantly recognisable to the modern birder from midden and
cave deposits.
In Mediaeval times, the first written
records of British birds were appearing, recording that Common Crane and
Capercaillie were still widespread. The human population began expanding
exponentially, having a massive and largely detrimental effect on bird
diversity.
The final chapter of the book is a neat
summary of where we are now and what might happen in the near future, in terms
of extinctions, reintroductions and colonisations. Changes in farming
techniques have caused a range retraction in seed-eating birds, while land
drainage has reduced the number of Yellow Wagtails. Red Grouse, arguably our
most distinct endemic form, has declined due to the overgrazing of heather,
while the planting of alien conifers for paper pulp has benefited Common
Crossbill and Siskin.
Human overcrowding, with its attendant land
developments and recreational use of the countryside, has seen mass
encroachment on wild birds’ territories, particularly by dogs and their owners,
but has also meant that interest in conservation has increased. Potential
colonisers from the Continent are discussed, as well as invasive aliens and
potential recolonisers from captive sources (Eagle Owl comes to mind), and the
likely losses of montane and northern species due to climate change.
The book closes with a lengthy annotated
historical list of British birds, though with no distinction between those with
an archaeological history and those merely mentioned in the text. This means
there are several intriguing but unclarified entries in the list, such as
Azure-winged Magpie, Griffon Vulture and Booted Eagle – are these former
British species?
Despite this minor niggle, this volume
looks set to become the best modern reference for anyone wishing to know about
the rich history of the British avifauna. It pulls together the most important
publications on Holocene birds – such as John Stewart on size change through
time and Tommy Tyrberg on speciation in glacial refugia – and gives a
comprehensive overview of the current state of our knowledge from
archaeological sites. It provides an informed perspective for anyone who has or
wants an opinion on the spate of recently mooted reintroductions. While laden
with technical data and historical detail, it is both readable and engaging.
If you want to know why we have the
avifauna we have today, this book should be your first port of call.
David Callahan
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