Table 4.

The top model set for the GLMM analysis of the terms influencing immigration to the group for each year of each pair bond tenure. Analysis was conducted on the total number of immigration events in each year a pair were extant. The best‐supported model is bolded

Model	df	AICc	ΔAICc	ωί	logLik
Pair length	5	178.98	0	1	−84.24
Chick recruitment	5	223.44	44.46	0	−106.47
Null	4	224.38	45.40	0	−108.02
Group size	5	224.53	45.55	0	−107.01

Parameter estimates	Estimate	SE	z
Intercept	−2.27	0.42	−5.45
Pair length	−2.11	0.41	−5.09

N = 126. Random effects: Year: 13 (SD 0), Group ID: 18 (SD 0), Group ID/Pair ID: 57 (SD 0.69).