Cover Illustration (Graham Easy)
Mallard on the River Cam
Contents of Volume 29 (1987)
The reborn Nature in Cambridgeshire (S. M. Walters) 2
The population of mallards on the River Cam at Cambridge (Iain
D.S. Brodie) 5
History and experimentation in the management
of Wicken Fen (T.A. Rowell) 14
Some Cambridgeshire birds of about 5,000 years ago (Marjorie
Northcote) 20
Spiked speedwell, soilstripes and polygons, and the
vanishing chalk heaths of Cambridgeshire (D. E. Coombe) 26
The effect of management on insect species richness at Wicken
Fen (D. M. Unwin) 37
Book reviews:
Hoverflies (Duncan Unwin) 41
The History of the Countryside (Peter Sell) 42
Heathlands (R. H. Marrs) 44
A survey of the breeding birds of Hayley Wood (Tony D. and Joanna
H. Williams) 47
Bats in Cambridgeshire (Tony Smith) 58
The dactylorchids of Wicken Fen (Peter Sell) 69
Changes in the new Hayley Lane Hedge (Julia Hutchinson) 72
Vascular plant records (G. Crompton) 74
Bryophyte records (C.D. Preston and H.L.K. Whitehouse) 77
Weather notes for Cambridgeshire 1986 (J.W. Clarke) 79
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