Both theoretical and empirical studies, many of them on lizards, suggest th
at foraging behaviors often take one of two forms, sometimes called "modes'
": active search or sedentary ambush. I tested this by expanding the databa
se on lizard foraging behaviors and testing for the existence of modality i
n this much larger database. My findings did not support the validity of so
me previous analyses. Greatly expanded lizard data did not show a bimodal d
istribution of foraging behaviors. Phylogeny, however, was a strong predict
or of behavior. One clads, Autarchoglossa, was characterized by a wide rang
e of Foraging behaviors, but closely related species tended to exhibit simi
lar behaviors. Two other clades, Iguania and Gekkota, retain the ancestral
sedentary behavior. This phylogenetic trend,combined with phylogenetically
biased sampling may have been responsible for the appearance of bimodality
in previous studies. Thus, bimodality of search modes is rejected, Some pre
vious generalizations regarding correlates of foraging "mode" need to be re
evaluated in this light.