Table S2.

Orientation of zebra finches trained to relocate a food reward in the spatial orientation assay using magnetic compass cues with overhead polarized light aligned parallel to the magnetic field

	Birds tested in the presence of magnetic compass and polarized light cues (Fig. 1G)				Birds tested for magnetic compass orientation under unpolarized light (Fig. 1H)
	gN	mN	Trained PL axis	Trained MC direction	gN	mN	Trained MC direction
n	26	26	26	26	20	20	20
Mean direction	18°	11°/191°	11°/191°	11°/191°	56°/236°	70°	226°
Mean vector length	0.149	0.361	0.361	0.361	0.195	0.242	0.224
Rayleigh test (P)	0.567	0.032	0.032	0.032	0.471	0.314	0.371

Orientation statistics as in Table S1. In addition, orientation statistics are given relative to the trained polarized light (PL) axis. See Fig. 1.