Table 1.

Corticosterone excretion patterns and behavior during the 2-h isolation period, using four different assays for fecal sample analysis

Assay	A corticosterone-3-carboxymethyloxim		B cortisone		C tetrahydro-corticosterone		D 5β-androstane-3α-ol, 11,17-dione-17-CMO
	CM range	mean CM	CM range	mean CM	CM range	mean CM	CM range	mean CM
n Droppings	rs=−0.66, p=0.076	rs=−0.70, p=0.056	rs=−0.26, p=0.53	rs=−0.43, p=0.29	rs=−0.71 p=0.05	rs=−0.78, p=0.023	rs=−0.61, p=0.11	rs=−0.74, p=0.035
n Hops, distance > 50 cm	rs=0.41, p=0.32	rs=0.048, p=0.91	rs=0.52, p=0.18	rs=0.26, p=0.53	rs=0.74, p=0.034	rs=0.48, p=0.23	rs=0.69, p=0.058	rs=0.52, p=0.18
Feeding duration (s)	rs=−0.66, p=0.076	rs=−0.50, p=0.20	rs=−0.06, p=0.89	rs=−0.10, p=0.82	rs=−0.22, p=0.61	rs=−0.50, p=0.20	rs=−0.46, p=0.26	rs=−0.66, p=0.076
Duration of object manipulation (s)	rs=−0.41, p=0.32	rs=−0.49, p=0.22	rs=−0.08, p=0.85	rs=0.01, p=0.98	rs=−0.52, p=0.19	rs=−0.40, p=0.33	rs=−0.53, p=0.18	rs=−0.54, p=0.17
Preening duration (s)	rs=0.25, p=0.55	rs=0.41, p=031	rs=−0.08, p=0.85	rs=0.08, p=0.85	rs=−0.08, p=0.85	rs=−0.08, p=0.85	rs=0.25, p=0.56	rs=0.41, p=0.31
Range and median CM ng/g feces	44.37–268.86	114.04	115.14–969.41	580.90	89.28–111.04	283.48	206.49–806.29	252.83

Significant Spearman rank-order correlations are written in bold and italics, trends are indicated in italics. P<0.0125 would remain significant after Bonferroni correction, P<0.05. Number of birds=8. We also present median CM value in ng/g feces and the CM range with each assay.