R: Begging by Owl Nestlings

Owls {glmmTMB} | R Documentation

## 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. http://www.sciencedirect.com/science/article/B6W9W-4PK8B6H-8/2/e43cfbaad4dc0bb2207adfc54a460c89; 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)

[Package glmmTMB version 0.2.2.0 Index]