◄Previous: References

# Acknowledgements

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

Course image: Vladimir Yaitskiy in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.

Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:

Figure 3 Bronson, F.H. (1987) 'Environmental regulation of reproduction in rodents', in Crews, D. (ed.) Psychobiology of Reproductive Behavior, p. 209, Prentice-Hall Inc., a Pearson Education Company;

Figure 6, 9 Adapted fro Irving, L. (1996) 'Adaptations to cold', Scientific American, 214 (1), p.96, by permission of the Executrix of the Estate of Bunji Tagawa;

Figure 7 Adapted from A Dictionary of Birds (1985) p. 207, T. & A. D. Poyser Limited, by permission of Academic Press (London) Limited, © The British Ornithologists' Union, 1985;

Figure 8 Pough, F. H., Heiser, J. B. and McFarland, W. N. (1996) Vertebrate Life, 4th edn, © 1996 by Prentice-Hall, Inc. Simon and Schuster/A Viacom Company, Upper Saddle River, NJ;

Figure 11 Halliday, T. (1980) Sexual Strategy, Oxford University Press;

Figure 12 From Biology of Plants by P. Raven, R. F. Evert and S. E. Eichhorn, © 1999 by W. H. Freeman and Company/Worth Publishers. Used with permission;

Figure 14 Pinder, A. W., Storey, K. B. and Ultsch, G. R. (1992) 'Estivation and hibernation', in Feder, M. E. and Burggren, W. W. (eds) Environmental Physiology of Amphibians, The University of Chicago Press, © 1992 by The University of Chicago. All rights reserved;

Figure 15 From L. C. H. Wang (1978) Strategies in Cold: Natural Torpidity and Thermogenesis, L. C. H. Wang and J. W. Hudson (eds), Academic, New York;

Figure 16 Nunes, S. et al. (1998) 'Body fat and time of year interact to mediate dispersal behaviour in ground squirrels', Animal Behaviour, 55 (3), p. 612, Academic Press (London) Limited;

Figure 17a and b Illustration by Adolph E. Brotman in Emlen, S. T. (1975) 'The stellar-orientation system of a migratory bird', Scientific American, August 1975;

Figure 17c and d Emlen, S. T. (1975) 'The stellar-orientation system of a migratory bird', Scientific American, August 1975

Adapted fro Irving, L. (1996) 'Adaptations to cold', Scientific American, 214 (1), p.96, by permission of the Executrix of the Estate of Bunji Tagawa

Don't miss out:

If reading this text has inspired you to learn more, you may be interested in joining the millions of people who discover our free learning resources and qualifications by visiting The Open University - www.open.edu/openlearn/free-courses

►Next: Contents

OpenLearn - Surviving the winter
Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.