Sociology, Princeton University

Research Professor of sociology, University of sydney

Max Planck Institute for the Study of Religious and Ethnic Diversity

Chair in Global Flyway Ecology at University of Groningen/Royal NIOZ

University of Amsterdam, International Migration Institute - Oxford University

Professor, Director, Max-Planck Institute and Konstanz University

Professor, Centre for Integrative Ecology, Deakin University (Warrnambool), Australia

Emeritus Professor of Development Studies, University of Oxford. Former Professor of …

Professor of Social Science, University of Salford