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Last broadcast on Thu, 21 Oct 2010, 21:00 on BBC Radio 4 (see all broadcasts).
Synopsis
25/40. In the northern hemisphere autumn is upon the world and the skies are busy with air traffic of the feathered variety. Bird migration is one of the great natural wonders of the living planet and this is peak time for northern hemisphere birds to head south. And we're interested in the birds bound for Africa. Swifts and Swallows, Martins and Warblers, Cuckoos and Nightingales are some of the birds that head for sub-Sahara Africa to winter. Many have arrived and are living under African skies.
We'll be in London at one of the most historic bird observatories with a special "memories" piece reflecting on a time when London's skies were busy with south-bound avian migrants.
And we'll have a special piece from a sacred forest in Ethiopia, a unique wooded island refuge in a desert of over tilled land - a forest protected by a church and its followers. We hear from Claire Ozanne from Roehampton University as she and colleagues conduct the first ever wildlife survey of this refuge. The biologists discover a new bird for Ethiopia and involve the local children in their discoveries. And we take on the bigger picture; what contribution does religion make to nature conservation at a global level? We have Martin Palmer, CEO of The Alliance of Religion and Conservation (ARC) in the studio.
Presented by Brett Westwood
Produced by Mary Colwell
Series Editor Julian Hector.
Aerial view of Dedresena Church Forest, Bahar Dar, Ethiopia
Image by Dr Phil Wittman
Ian Wallace's bird migration observations in London in 1960 and 2010
At this time of year autumn migration into Britain is hotting up. Winter visitors like redwing and fieldfare and are arriving from Scandinavia and Europe and can often be clearly seen flying in a visible migration during the day.
Ian Wallace, a pioneer of ornithology in this country, has been watching this phenomenon since he was a young man and decided upon a unique experiment to observe daytime or visible migration over London. In the autumn of 1960 forty observers took on the task of counting the numbers and species of birds flying across the city.
Last Friday, October 15th was one of the days Ian made his observations 50 years ago at Primrose Hill, just north of Regent’s Park. It was here that Sarah Pitt met him at 0730 to observe the day’s migration for one hour, just as Ian had done in 1960.
Here are the numbers and species he saw in 1960:
37 lapwing
34 black headed gull
4 common gull
2 lesser black backed gull
620 wood pigeon
120 skylarks
15 Meadow pipit
3 linnet
5 redpoll
1 reed bunting
6 house martin
9 song thrush
54 redwing
4 mistle thrush
1 blackbird
71 chaffinch
10 brambling
2 greenfinch
4 siskin
Here are the numbers and species he saw in 2010:
3 redwings
1 fieldfare
29 chaffinches
10 starlings
4 species of gulls including common gull.
View of Dedresena church forest
Image by Dr Phil Wittnman
See more at www.canopyquest.com
Approaching Dedresena church forest by road
Image by Dr Phil Wittman
For more see www.canopyquest.com
Ian Wallace on Primrose Hill
Image by Sarah Pitt
Ian Wallace on Primrose Hill
Image by Sarah Pitt
View of London skyline from Primrose Hill
Image by Sarah Pitt
Broadcasts
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Tue 19 Oct 201011:00
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Thu 21 Oct 201021:00



