Forehead Patch Size in Collared Flycatachers

Forehead patch size in 30 male Collared Flycatachers measured in two consecutive years.

Usage

FlycatcherPatch

Format

A data frame with 30 observations on the following 2 variables.

patch98

a numeric vector

patch99

a numeric vector

Source

Griffith, S.C. and B.C. Sheldon. 2001. Phenotypic plasticity in the expression of a sexually selected trait: neglected components of variation. Animal Behaviour 61: 987-993.

Examples

str(FlycatcherPatch)
#> 'data.frame':	30 obs. of  2 variables:
#>  $ patch98: num  10.5 10.6 8.7 8.6 9 9.3 8.9 9 7.9 7.6 ...
#>  $ patch99: num  9.3 9.2 9.3 9.1 9 8.7 8.7 7.6 8 7.8 ...
xyplot(patch99 ~ patch98, FlycatcherPatch)