Table 1.

Factors affecting the foraging behaviour of willow tits analysed using the generalized linear mixed model. The foraging behaviour (consume or cache) was modelled in response to the number of repeated visits to the feeder and presence or absence of flock members. s.e.: standard error. Sample size: n = 381 feeder visitations by 13 individuals in 41 trials. All fixed terms were standardized before the analysis.

model	estimate	s.e.	d.f.	χ2	p
intercept	−1.85	0.35
number of feeder visitations	−1.6	0.23	1	77.97	<0.001
flock members (presence/absence)	−0.44	0.15	1	9.12	<0.01