BTdata: BTdata: Morphological Traits of the Blue Tit (Cyanistes...

In fontikar/circus: Helper functions to wrangle animal models from 'brms'

Description

This dataset was collected for the study: "Testing the phenotypic gambit: phenotypic, genetic and environmental correlations of colour" by Hadfield et. al (2007). Data was collected in the spring of 2002 on a population of blue tits at Silwood Park, London, UK. This dataset includes seven variables measured from a cohort of blue tit chicks (n = 828). Blue tit chicks were cross-fostered between nests (i.e. chicks from different families were swapped). This allowed separation of genetic from environmental sources of variation. Variables include: two morphological traits (tarsus and back); sex; hatching date; the ID of the chick; ID of the chick's mother and the ID of the nest that fostered the chick.

Usage

BTdata

Format

A data frame

1. tarsus: Tarsus length, z-transformed

2. back: Colour score of back plummage, z-transformed

3. animal: Unique identification for each chick (828 levels)

4. dam: Unique identification for each mother (106 levels)

5. fosternest: Unique identification for foster nest (104 levels)

6. hatchdate: Hatching date of chick, z-transformed

7. sex: Sex of chick (3 levels, Fem = Female, Male = Male, UNK = Unknown)

References

Hadfield, J. D., Nutall, A., Osorio, D., & Owens, I. P. F. (2007). Testing the phenotypic gambit: phenotypic, genetic and environmental correlations of colour. Journal of Evolutionary Biology, 20(2), 549-557.

fontikar/circus documentation built on Aug. 25, 2020, 5:17 a.m.