Table 1.

Parameter estimates of the best model of weaning success for bighorn ewes at Ram Mountain, Canada (1975–2014). Prime-aged ewes (2–7) were used as reference.

	estimate	s.e.	Z-value	p-value
intercept	0.522	0.161	3.241	0.001
age class (older)	−0.014	0.172	−0.083	0.934
age class (senescent)	−1.155	0.398	−2.902	0.004
current density	0.009	0.141	0.062	0.950
birth density	−0.268	0.121	−2.211	0.027
density interaction	−0.642	0.118	−5.419	<0.001