Bergmann’s rule and Allen’s rule in two passerine birds in China

Table 4 Relationships of residual of bill length or residual of tarsus length with each environmental variable

Species	Trait	Sex (n)	Parameter	Latitude	Elevation	bio1	bio5	bio6	bio10	bio11
Pica serica	Residual of bill length	Male (78)	p	< 0.001	ns	< 0.001	0.011	< 0.001	0.001	< 0.001
		Male (78)	R ²	0.413		0.313	0.099	0.381	0.151	0.355
		Female (74)	p	< 0.001	0.006	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
		Female (74)	R ²	0.211	0.096	0.256	0.139	0.236	0.190	0.240
	Residual of tarsus length	Male (81)	p	< 0.001	ns	0.001	ns	< 0.001	ns	< 0.001
		Male (81)	R ²	0.261		0.144		0.226		0.210
		Female (80)	p	< 0.001	ns	< 0.001	ns	< 0.001	0.03	< 0.001
		Female (80)	R ²	0.354		0.297		0.362	0.081	0.366
Parus minor	Residual of bill length	Male (244)	p	ns	ns	ns	ns	ns	ns	ns
		Male (244)	R ²
		Female (121)	p	ns	ns	ns	ns	ns	ns	ns
		Female (121)	R ²
	Residual of tarsus length	Male (248)	p	ns	ns	ns	ns	ns	ns	ns
		Male (248)	R ²
		Female (121)	p	ns	ns	ns	ns	ns	ns	ns
		Female (121)	R ²

ISSN: 2053-7166