1. Department of Statistics Iowa State University Snedecor Hall Ames IA 50011 USA
2. Department of Statistical Sciences Centre for Statistics in Ecology, Environment and Conservation University of Cape Town Cape Town Rondebosch 7701 South Africa
3. Department of Zoology Institute for Coastal and Marine Research Nelson Mandela Metropolitan University Port Elizabeth 6031 South Africa
4. Department of Business Administration and Economics Bielefeld University Postfach 100131 33501 Bielefeld Germany
5. CSIRO Oceans and Atmosphere PO Box 1538 Hobart Tas. 7000 Australia
6. National Institute of Polar Research 10‐3, Midori‐cho Tachikawa Tokyo 190‐8518 Japan
7. SOKENDAI (The Graduate University for Advanced Studies) 10‐3, Midori‐cho Tachikawa Tokyo 190‐8518 Japan
8. Animal Demography Unit Department of Biological Sciences University of Cape Town Cape Town Rondebosch 7701 South Africa
9. Percy FitzPatrick Institute of African Ornithology Department of Biological Sciences University of Cape Town Cape Town Rondebosch 7701 South Africa
10. School of Biology Scottish Oceans Institute University of St Andrews St Andrews KY16 8LB UK
11. Department of Biological Sciences Florida International University 3000 NE 151st, MSB 350 North Miami FL 33181 USA