Model comparison between near-miss to Weber’s law and Weber’s law in different nectar-feeding animals.

In both models Equation 5 was fitted against observed discrimination performances. Lower Akaike Information Criterion (AIC) scores indicate a better fit of a model to the data, after penalizing for the number of estimated parameters. AIC scores cannot be compared between rows. ΔAIC gives the difference between the AIC scores for the near-miss to Weber’s law model and Weber’s law model. F and p values are based on one-way ANOVAs with 1 df.Sources: Glossophaga soricina, this study; Glossophaga commissarisi, [23]; different Trochilidae species, [43]; Bombus impatiens, [24]; Apis mellifera ligustica, [44].***paThe exponent β was estimated in the near-miss to Weber’s law model and fixed at one in the Weber’s law model. Values in the middle are average estimates and the values to the left and right are the 95% confidence interval limits.