Hard times in the city – attractive nest sites but insufficient food supply lead to low reproduction rates in a bird of prey

Table 4 Summary of model-selection according to Mark[106] for fixed-effects models of daily survival rate for kestrel nests ( N = 157)

Model	K	AIC_c	ΔAIC_c	ω _i
Laying date^‡ + Sealed soil (%)	3	271.42	0.00	0.5659
Laying date^‡ + Sealed soil (%) + Age found	4	272.19	0.77	0.3852
Laying date^‡	2	276.61	5.19	0.0422
Distance (m)^† from closest open green space (≥1 ha) + Sealed soil (%)	3	282.05	10.62	0.0028
Presence/absence of green courtyard + Sealed soil (%)	3	282.88	11.45	0.0018
Sealed soil (%)	2	283.86	12.44	0.0011
Age found + Sealed soil (%)	3	284.89	13.47	0.0007
Nearest neighbour distance (m)^†	2	288.30	16.88	0.0001
Age found	2	290.46	19.04	0
Intercept-only model (constant daily survival rate)	1	290.49	19.07	0
Time Trend	2	290.89	19.47	0
Traffic area (m², in r = 100 m around the nest site)^†	2	291.27	19.85	0

K is the number of parameters in the model and ω_i the model weight.
Note:^‘‡’ data presented as residuals with the study year, ^‘†’ log transformed.

ISSN: 1742-9994