Table 3. Modeling feather CORT (CORT_f) effects on subsequent annual survival (ϕ) of urban (n = 109) and rural (n = 74) adult burrowing owls. In all models, resighting probabilities (p) varied over time and survival after first year of CORT_f sampling was considered to be constant over time and different for rural and urban birds. Model notation: “-”: constant (i.e. no CORT_f effect); CORT_f: linear CORT_f effect; CORT_f + CORT_f ²: quadratic CORT_f effect. All other notations as in Table 1.

Model	ϕ urban	ϕ rural	AICc	ΔAICc	wi	NP	deviance
1a	CORTf + CORTf2	CORTf	403.89	0.00	0.39	13	376.54
1b	CORTf + CORTf2	—	405.79	1.90	0.15	12	380.63
1c	CORTf + CORTf2	CORTf + CORTf 2	406.07	2.18	0.13	14	376.50
1d	CORTf	CORTf	406.31	2.41	0.12	12	381.15
1e	—	CORTf	406.95	3.06	0.08	11	383.98
1f	CORTf	—	408.33	4.43	0.04	11	385.35
1g	CORTf	CORTf + CORTf 2	408.48	4.58	0.04	13	381.12
1h	—	fCORT + fCORT 2	409.12	5.23	0.03	12	383.96
1i	—	—	409.28	5.38	0.03	10	388.46