. Author manuscript; available in PMC: 2010 Nov 1.

Published in final edited form as: Behav Processes. 2009 Jul 8;82(3):229–235. doi: 10.1016/j.beproc.2009.06.010

Table 1.

Mean number of pecks per trial in each experiment.

	Experiment 1					Experiment 2		Experiment 3		Experiment 4
	Phase 1		Phase 2

Bird	Towards	Away	Towards	Away	Bird	Towards	Away	Green	Red	Towards	Away
43	7.53	2.97	7.15	2.99	2	2.14	2.13	1.92	1.79	20.38	6.15
84	0.19	0.22	0.15	0.17	10	1.96	0.23	0.17	0.28	27.55	17.46
85	0.42	0.55	0.36	0.61	67	1.85	0.04	0.47	0.74	31.81	39.17
86	3.45	0.60	2.48	0.03	118	0.51	0.04	0.70	0.45	18.02	21.50