Table 2.

Reduced foraging group sizes after disturbance events. The foraging group size model describes the effect of treatment phase on the number of individuals foraging simultaneously (median per 3 min bin per trial). The estimates are relative to data collected in the pre-treatment phase. The effects of time and zucchini type are relative to morning trials and normally sized zucchinis, respectively.

	estimate	s.e.	t-value	p-value
disturbance event 1	0.131	0.471	0.278	0.781
disturbance event 2	−1.099	0.523	−2.102	0.038
disturbance event 3	−2.486	0.701	−3.548	0.001
post-treatment	−1.848	0.360	−5.130	<0.0001
recovery phase	−1.2413	0.439	−2.824	0.006
time (afternoon trial)	−0.272	0.262	−1.037	0.302
zucchini size (large)	1.197	0.474	2.523	0.013
random effects	variance	s.d.
colony	1.188	1.090