abd (version 0.2-7)

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.

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')
)