Table 1.

Effect of low and high call rates on (a) feeding rate and (b) generosity. (Shown are the results of GLMMs including group and individual identities as random terms. Non-significant terms were deleted from the final models.)

response term	explanatory terms	F	p value	effect (s.e.)
(a) feeding rate (g fed per hour)	treatment	7.82	0.008	high: 0.0 (0.0), low: −0.48 (0.17)
	sex	4.44	0.043	female: 0.0 (0.0), male: −0.39 (0.18)
	status	0.36	0.551
	treatment×sex	0.95	0.334
	treatment×status	1.14	0.291
	status×sex	2.08	0.160
(b) generosity (g fed/g found)	treatment	14.1	<0.001	high: 0.0 (0.0), low: −0.41 (0.11)
	sex	8.06	0.008	female: 0.0 (0.0), male: −0.31 (0.11)
	status	0.81	0.375
	treatment×sex	4.80	0.034
	treatment×status	0.23	0.631
	status×sex	2.39	0.133