We inadvertently left out one acknowledgement in our paper  and we add it now in this addendum:
We thank Natalie Doerr for an excellent job of setting up and running the bowerbird cameras and other aspects of fieldwork during the 2012 season.
In addition, we neglected to reduce the number of significant figures in table 1 from the original R output. If interested, please round off each number to three significant figures.
- Received April 9, 2014.
- Accepted April 10, 2014.
- © 2014 The Author(s) Published by the Royal Society. All rights reserved.