Woodland Trust

Nature's CalendarNature Detectives

The cuckoo comes in April, he sings his song in May - listen for his haunting call this spring

Snowdrop. Margaret BartonMarsham's 27 indications of spring

Started in 1736 when Robert Marsham was still a young man, and continued by his family until 1958

They provide unique records of springs between those years and how they related to the weather, showing us just how responsive spring events are to temperature, and warning us that not all species respond at the same rate. They recorded:

Snowdrop
 first flowering 
  
Wood anemone first flowering 
  
Hawthorn first flowering 
  
Turnip first flowering 
  
Hawthorn first leafing 
  
Sycamore first leafing 
  
Silver birch first leafing 
  
Elm first leafing 
  
Rowan first leafing 
  
Oak first leafing 
  
Beech first leafing 
  
Horse chestnut first leafing 
  
Sweet chestnut first leafing 
  
Hornbeam first leafing 
  
Ash first leafing 
  
Lime first leafing 
  
Field maple first leafing 
  
Swallow first seen 
  
Cuckoo first seen 
  
Nightingale first heard 
  
Nightjar first heard 
  
Song thrush first heard 
  
Ringdove (Woodpigeon) first seen 
  
Rook first nest building 
  
Rook young first seen 
 
Brimstone butterfly first seen 
  
Frogs and toads first heard croaking

 
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Robert Marsham


Bewick's engraving of a swallow used to illustrate Gilbert White's "A Natural History of Selborne"