Colias croceus

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CLOUDED YELLOW Colias croceus

A migrant species which does not survive the British winter in any stage, and therefore unpredictable as to where it may be found in any year.

THE THREE PERIODS COMPARED

PERIOD 1 (1940-1994) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER

PERIOD 2 (1995-2000) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER

PERIOD 3 (2001-2007) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER

 

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