Press Association: Climate change has altered the nesting patterns of birds resulting in earlier migrations, experts have found.
It has long been suspected that birds are migrating earlier each year to cope with changes in their environment, but research by the University of East Anglia has found that the phenomenon is more complex.
Individual birds migrate like clockwork arriving at the same time each year, according to the study. However, younger birds are migrating earlier because of changes to nesting and...