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Table 2 Comparison of models to explain variation among species and over time in roost size using Akaike’s Information Criterion (AIC), ΔAIC, Akaike weights ( ω I )

From: Avian roosting behavior influences vector-host interactions for West Nile virus hosts

Model AIC ΔAIC ω i K
Species*Jdate + Species*Jdate0.5 16694 0 1 12
Species + Jdate 16965 271 0 9
Jdate + Jdate0.5 17135 441 0 3
Species*Jdate 22144 5450 0 10
Species + Jdate + Jdate0.5 22266 5572 0 10
Jdate 22418 5724 0 2
Species 41269 24575 0 8
Intercept 41373 24679 0 1
  1. *denotes an interaction between two model parameters.
  2. Parameters in the model include linear and nonlinear time components (Jdate is the Julian date or day of the year, with January 1 = 1). K is the number of parameters in the model.