Caddis flies in River Thet making cases from plastic

Caddis flies found in chalk streams the River Thet and Pakefield Stream in Norfolk and Suffolk have started including plastic in their protective cases.

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Clare Higson ,Clare Miller Jones ,Simon Parker ,Helen Baczkowska ,Conor Matchett ,Norfolk Wildlife ,Thetford River Group ,Environment Agency ,River Thet ,Pakenham Stream ,Norfolk Wildlife Trust ,River Little Ouse ,Photograph Simon ,Sean Ready ,