Table 1.

Univariate correlations between diet and nest habitat for males(r_m*h) and eggs (r_e*h) and the predicted correlation between males and females (r_m*e) that would result from spatial cosegregation, calculated as r_m*h * r_e*h.

A. Trophic position: observed rm*e = 0.282 (95% CI:   0.091–0.452)
Habitat feature	rm*h	Pm*h	re*h	Pe*h	rm*e
Shore	0.267	0.007	0.309	0.002	0.083
Nest depth	0.267	0.007	−0.132	0.19	−0.035
Vegetation cover	0.241	0.015	0.089	0.37	0.021
Wood cover	0.109	0.28	0.041	0.69	0.004

B. Percent benthic carbon: observed rm*e = 0.453 (95% CI:   0.027–0.740)
Habitat feature	rm*h	Pm*h	re*h	Pe*h	rm*e
Nest depth	−0.112	0.63	−0.413	0.063	0.041
Vegetation cover	0.167	0.47	−0.208	0.37	−0.034
Wood cover	0.321	0.16	−0.199	0.39	−0.064