Nutritional content (mean ± SE) of plant species consumed by macaws compared with plant species not eaten.1,2,3

1Observations are pooled for all three macaw species, Ara macao, A. chloroptera, and A. ararauana, comparing foods eaten by a member of at least one species of Ara macaw with foods not eaten by macaws in this study, but available simultaneously to macaws during their foraging activities.2All values are on a dry-weight basis. Units are: percentage for proximate nutritional components; percentage chlorogenic acid equivalents for phenolics; mg/g for estimates of LD50; and mg/kg for minerals. All data was log(10) transformed for analysis, and non- transformed values are presented.3A straight Bonferroni correction for 14 comparisons yields none of these univariate comparisons statistically significant. We present these data nevertheless, because of criticism of this correction being overly conservative and resulting in excessive Type II error (see Methods), particularly in disciplines such as ecology and behavior where data are difficult to obtain.