Owls {glmmTMB}

Begging by Owl Nestlings

Description

Begging by owl nestlings

Usage

data(Owls)

Format

The Owls data set is a data frame with 599 observations on the following variables:

Nest

a factor describing individual nest locations

FoodTreatment

(factor) food treatment: Deprived or Satiated

SexParent

(factor) sex of provisioning parent: Female or Male

ArrivalTime

a numeric vector

SiblingNegotiation

a numeric vector

BroodSize

brood size

NegPerChick

number of negotations per chick

Note

Access to data kindly provided by Alain Zuur

Source

Roulin, A. and L. Bersier (2007) Nestling barn owls beg more intensely in the presence of their mother than in the presence of their father. Animal Behaviour 74 1099–1106. doi:10.1016/j.anbehav.2007.01.027; http://www.highstat.com/Books/Book2/ZuurDataMixedModelling.zip

References

Zuur, A. F., E. N. Ieno, N. J. Walker, A. A. Saveliev, and G. M. Smith (2009) Mixed Effects Models and Extensions in Ecology with R; Springer.

Examples

data(Owls, package = "glmmTMB")
require("lattice")
bwplot(reorder(Nest,NegPerChick) ~ NegPerChick | FoodTreatment:SexParent,
       data=Owls)
dotplot(reorder(Nest,NegPerChick) ~ NegPerChick| FoodTreatment:SexParent,
        data=Owls)
## Not run: 
## Fit negative binomial model with "constant" Zero Inflation :
owls_nb1 <- glmmTMB(SiblingNegotiation ~ FoodTreatment*SexParent +
                                    (1|Nest)+offset(log(BroodSize)),
              family = nbinom1(), zi = ~1, data=Owls)
owls_nb1_bs <- update(owls_nb1,
                      . ~ . - offset(log(BroodSize)) + log(BroodSize))
fixef(owls_nb1_bs)

## End(Not run)