Relationships between interspecific differences in the mass of internal organs, biochemical markers of metabolic activity, and the thermogenic properties of three small passerines

Table 2 Linear regression statistics for log dry organ mass versus log body mass (partial correlations) and log dry organ mass versus log BMR residuals among small birds in China

	Muscle	Heart	Liver	Kidney	Gizzard	Small intestine	Rectum	Digestive tract
Partial correlations
R ²	0.669	0.193	0.002	0.397	0.406	0.038	0.076	0.487
p	<0.01	<0.05	<0.05	<0.01	<0.001	0.177	0.098	<0.01
Slope	1.292	0.898	0.070	1.030	1.720	0.408	0.635	1.226
Residual correlations
R ²	0.008	0.020	0.019	0.043	0.058	0.056	0.020	0.169
p	0.664	0.235	0.513	0.949	0.129	0.133	0.235	<0.05
Slope	0.050	0.253	0.143	0.010	0.381	0.267	0.269	0.336

ISSN: 2053-7166