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circular (version 0.5-1)

ncfrog: Northern Cricket Frog

Description

In an experiment due to Ferguson et al. (1967) a number of northern cricket frogs (Acris crepitans) were collected from the mud flats of an abandoned stream meandering near Indianola, Mississippi, and taken to a test pen lying to the north west of the collection point. After 30 hours of enclosure within a dark environmental chamber, 14 of them were released and the directions taken by these frogs recorded. 0 degrees means North.

Usage

data(ncfrog)

Arguments

Format

ncfrog is a vector of 14 observations (in degrees). ncfrog.rad contains the same observations in radians (pi/180).

See Also

Ferguson, D.E, Landreth, H.F. and McKeown, J.P. (1967) Sun compass orientation of the northern cricket frog, Acris crepitans. Anim. Behav., 14, 45--53.