Table 4.

Best-fit model results for nest habitat related to male isotopes and morphology. All models started with all factors included (percent benthic carbon, trophic position, standard length, gape width residual, and gill raker length residual). All factors from the best fit model are included.

A. Nest   depth	Estimate	Std. error	t value	P
(Intercept)	−0.870	0.554	−1.572	0.12
Percent   benthic   carbon	−0.191	0.0822	−2.328	0.022
Trophic   position	0.568	0.174	3.269	0.0015
Gape width   residual	−0.906	0.507	−1.786	0.077
Raker   length   residual	−0.552	0.250	−2.206	0.030
Shore	−0.248	0.0669	−3.704	0.00036
B. Vegetative   cover	Estimate	Std. error	z value	P
(Intercept)	−14.469	4.976	−2.908	0.0036
Trophic position	4.468	1.574	2.838	0.0045
Gape width   residual	−7.803	4.278	−1.824	0.068
Shore	−1.080	0.590	−1.829	0.067
C. Wood cover (Intercept)	Estimate −7.812	Std. error 3.041	z value −2.569	P 0.010
Standard   length	0.151	0.0686	2.207	0.027