Table 3.

Summary of the data from chick colour preference experiments. For experiment 1, one selection was made by each pair of chicks, and we give the total number of selections for each colour. For experiments 2–4, the mean number of selections for each colour from the first 10 pecks is given. n is the number of pairs of chicks in each experiment. Colours are specified in table 2 and figure 2. sat., saturated; unsat., unsaturated.

experiment	n	orange		blue		grey		red		green
		sat.	unsat.	sat.	unsat.	sat.	unsat.	sat.	unsat.	sat.	sat.
1	33	23	3	6	1	n.a.	n.a.	13	1	17	2
2	10	5	2.8	1	1	0.2	1	4.5	2	1.6	0.9
3	6	4.67	3.33	0.33	0.83	0.83	0.33	7.83	0.5	0.83	0.5
4	6	5	4	0.67	0.17	0.17	0.33	5.33	2	1.67	1.67