There were errors in J. Exp. Biol. (2022) 225, jeb244818 (doi:10.1242/jeb.244818).

An incorrect earlier version of Fig. 3 was mistakenly uploaded twice and used as the final version of both Figs 2 and 3 of this paper. The original and corrected versions are shown below.

Fig. 2 (original).

Box-and-whisker plots of pulling forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 2 (original).

Box-and-whisker plots of pulling forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 2 (corrected).

Box-and-whisker plots of pulling forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 2 (corrected).

Box-and-whisker plots of pulling forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 3 (original).

Box-and-whisker plots of gripping forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 3 (original).

Box-and-whisker plots of gripping forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 3 (corrected).

Box-and-whisker plots of gripping forces in Agapornis roseicollis, measured across a range of perch diameters.

Fig. 3 (corrected).

Box-and-whisker plots of gripping forces in Agapornis roseicollis, measured across a range of perch diameters.

The online full text and PDF versions of the paper have been corrected. Both the journal and the authors apologise to readers for not spotting this error, which does not impact the results or conclusions of the paper.