Toronto – Every year, approximately 2 billion birds belonging to hundreds of different species make migratory movements between the boreal and temperate regions of Eurasia and the tropical regions of Africa. Migration is an essential phase of the life cycle of these species. A study conducted by Nicola Saino, Luca Gianfranceschi and Diego Rubolini from the Department of Biosciences of University of Milan – La Statale was published by Molecular Ecology. The paper focuses on the role of the Clock gene on migration phases. (9Colonne)