The Food, Growth and Fledging Success of Norwegian Puffin Chicks Fratercula arctica in 1980-1983

Abstract
The breeding success of Puffins Fratercula arctica, and the quality and quantity of food brought to their chicks were studied at 12 colonies along the coast of Norway in 1980-1983. In the north and south of the country, breeding success was good while, prior to 1983, it was poor or a total failure at colonies in the central region. Evidence which suggests a direct relationship between the level of Herring Clupea harengus stocks and the breeding success of Puffins at the latter colonies is presented.