Between 1950 and 1970 I studied a population of Stonechats Saxicola torquata in the area of St Ouen's Bay, Jersey, Channel Islands. In the course of this, nearly 1,000 individuals of all ages were ringed and, between 1951 and 1965, 660 of them were also colour-ringed. From October 1954 to May 1959 observation was maintained almost daily and during this time records were kept on a total of 510 colou...

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