Table 2. Summary of a priori models based on resource selection functions that predict the probability that a breeding Ring-billed gull will forage in a patch (200-m radius) for a 100-s residence time threshold.

Model	Deviance	K	ΔAICc	wi
H+D+B	7,891	26	0.00	0.813
H+D+R+B	7,886	30	2.94	0.187
H+D	7,940	19	35.06	0.000
H+D+R	7,936	23	38.63	0.000
H+B	8,466	18	558.98	0.000
H+R+B	8,459	22	560.26	0.000
H	8,533	11	611.33	0.000
H+R	8,527	15	613.67	0.000

H: habitat types; D: distance between a location and the colony; R: mean daily rainfall; B: breeding stage (egg incubation vs. chick rearing); K: number of parameters; w_i: Akaike weight.