Blossom (version 1.4)

bgrouse: Blue grouse migration data

Description

The distance and elevation change (in meters) for male and female blue grouse (Dendragapus obscurus) migrating from where they were marked on their breeding range to their winter range.

Usage

data(bgrouse)

Format

A data frame with 21 observations on the following 3 variables.

sex

Bird gender, 4 = adult female, 3 = adult male.

distance

The distance traveled from their breeding to their winter range.

elev

The elevation change from breeding to winter range.

Source

Cade, B.S., and R.W. Hoffman. 1993. Differential migration of blue grouse in Colorado. Auk 110, 70--77.

Examples

str(bgrouse)

plot(bgrouse$distance,bgrouse$elev,pch=c(17,19)[(bgrouse$sex==4)+1],
  col = c("red","blue")[(bgrouse$sex==4)+1],xlab = "Migration distance (m)",
  ylab = "Change in Elevation (m)",
  main = "Migration distance and elevation change for blue grouse")
  
legend(22000,150,c("Female","Male"),pch = c(17,19),col = c("red","blue"))