Table 2.

Principal component analysis of behavioral responses of red junglefowl chicks and adults in personality assays (novel arena, NA, and novel object, NO). The first principle component (PC1) is interpreted as primarily describing more or less exploratory individuals; the second (PC2) as mainly describing more or less shy individuals

	Chicks		Adults
	PC1	PC2	PC1	PC2
Locomotion (NA)	0.51	− 0.20	0.52	− 0.42
Vigilance (NA)	0.49	0.06	0.55	0.20
Latency to move (NA)	− 0.38	0.28	0.04	0.55
Latency to explore all areas (NA)	− 0.47	0.32	− 0.32	0.52
Vigilance (NO)	0.31	0.62	0.37	0.34
Number of escape attempts (NO)	0.21	0.63	0.43	0.30
Eigenvalues	2.74	1.27	2.00	1.56
Variance explained (%)	45.67	21.13	33.39	26.07

Factor loadings, eigenvalues, and variance explained by components are presented. Values in italics have values > ± 0.30