Model                                     AIC       deltaAIC        AIC wgtModel Likelihood        no.Par.     -2*LogLike
psi(.),p(.)                             34.58           0.00         0.3693         1.0000              2          30.58
psi(.),p(rain)                          34.68           0.10         0.3513         0.9512              3          28.68
psi(bush),p(.)                          36.48           1.90         0.1428         0.3867              3          30.48
psi(bush),p(rain)                       36.57           1.99         0.1365         0.3697              4          28.57
