abd: Chickadees – R documentation

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Chickadees

Alarm Calls in Chickadees

Description

Number of "dee" notes per call in Black-capped Chickadees (Poecile atricapilla) for 13 predator species with differing body masses.

Format

A data frame with 13 observations on the following 3 variables.

species: a character vector
mass: a numeric vector
dees: a numeric vector

Source

Templeton, C.N., E. Greene, and K. Davis. 2005. Allometry of alarm calls: Black-capped Chickadees encode information about predator size. Science 308: 1934-1937.

References

http://www.sciencemag.org/cgi/content/short/308/5730/1934

Examples

str(Chickadees)
Chickadees

xyplot(dees ~ mass, data = Chickadees,
   xlab = "Predator body mass (kg)",
   ylab = "'Dees' per call", type=c('p','r')
)

abd

The Analysis of Biological Data

v0.2-8

GPL-2

Authors

Kevin M. Middleton <middletonk@missouri.edu>, Randall Pruim <rpruim@calvin.edu>

Initial release

2015-07-02