Forehead Patch Size in Collared Flycatachers

Description

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

Usage

1

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

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