Temporary shift of body size in hooded crows Corvux corone cornix of NW Italy

Unusual climatic events are known to influence micro-evolutionary changes in birds through selection and directional evolution of body size. In NW Italy a notable climatic episode occurred from 1984–85 to 1986–87 when the winters were unusually severe. In the periods 1986–88 and 1997–2000 we measured the body size and mass of 808 adult hooded crows. Body size measurements of specimens collected fr…