Table 1.

Proportion of functional objects selected by all subjects in four stages.

	Exp.1		Exp.2		Exp.3		Exp.4		Exp.5		Exp.6
	A	B	A	B	A	B	A	B	A	B	A	B
First 3 trials	0.779	0.57	0.729	0.545	0.726	0.929*	0.602	0.269	0.481	0.582	0.575	0.593
First 5 trials	0.767	0.629	0.745	0.657	0.790	0.899*	0.605	0.327	0.438	0.649	0.601	0.585
Last 3 trials	1.000*	0.902*	1.000*	0.976*	1.000*	0.969*	0.611	0.290	0.546	1.000*	0.344	0.377
Last 5 trials	0.987*	0.856*	0.994*	0.972*	1.000*	0.929*	0.500	0.309	0.528	0.986*	0.443	0.408

Proportion of functional objects selected by all subjects in the first third and fifth trials, and the last third and fifth trials.

A) Azure-winged magpies, B) New Caledonian crows.

Significant results are marked with * (P < 0.05).