This week of the course was written by David Robinson. It was first published in August 2019.
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Figure 1, 4, 6, 9,13 and 14: courtesy of David Robinson
Figure 2: Penguin Watch; https://www.zooniverse.org
Figure 3: Daniel Berganza
Figure 5: Hunter_M_Madison3; https://emammal.si.edu/; https://creativecommons.org/ licenses/ by-nc-sa/ 4.0/
Figure 7: Auscape/ardea.com
Figure 8: © 2017 British Ornithologists’ Union and R.A. Philips (photo)
Figures 10, 11 and 12: OPAL (Open Air Laboratories).
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