Table 3.

Final coefficients for linear models of δ¹³C and δ¹⁵N after model selection and averaging. Coefficients highlighted in bold are those for which the 95% confidence interval does not include zero

Term	δ13C				δ15N
	Coefficient	LCI	UCI	Weight	Coefficient	LCI	UCI	Weight
Intercept	−25.6	−25.8	−25.3	NA	12.4	10.7	14.1	NA
Sex	−0.014	−0.184	0.156	0.139	1.140	0.190	2.090	1.00
Age	0.00037	−0.00192	0.00265	0.194				0
Puffins	0.00001	−0.00011	0.00014	0.151				0
Vegetation (Silene uniflora)	−0.018	−0.185	0.150	0.151	1.10	−0.96	3.15	0.65
Syphacia obvelata				0	1.03	0.04	2.01	1.00
Trichuris muris				0				0

LCI: lower 95% confidence interval; UCI: upper 95% confidence interval.