Changes in mean bill length of male and female creeper and white-eyes, with standard errors.

<p>Light grey bars represent birds captured during 1987–1999, black bars during 2000–2006. This figure is associated with <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067914#pone-0067914-t005" target="_blank">Table 5</a>. Note the sample sizes which indicate the increase in white-eyes on the 1900 m site.