There was an error published in J. Exp. Biol. (2018) 221, jeb176750 (doi:10.1242/jeb.176750).
In Figs 6–10, the vorticity magnitude colour bar was incorrect. The original bar (left) and corrected bar (right) appear below.
Both the online full-text and PDF versions have been updated.
The authors apologise for these errors and any inconvenience they may have caused.
© 2019. Published by The Company of Biologists Ltd
2019