cuckoohosts {DAAG}R Documentation

Comparison of cuckoo eggs with host eggs

Description

These data compare mean length, mean breadth, and egg color, between cuckoos and their hosts.

Usage

cuckoohosts

Format

A data frame with 10 observations on the following 12 variables.

clength
mean length of cuckoo eggs in given host's nest
cl.sd
standard deviation of cuckoo egg lengths
cbreadth
mean breadth of cuckoo eggs in given host's nest
cb.sd
standard deviation of cuckoo egg breadths
cnum
number of cuckoo eggs
hlength
length of host eggs
hl.sd
standard deviation of host egg lengths
hbreadth
breadth of host eggs
hb.sd
standard deviation of host egg breadths
hnum
number of host eggs
match
number of eggs where color matched
nomatch
number where color did not match

Details

Although from the same study that generated data in the data frame cuckoos, the data do not match precisely. The cuckoo egg lengths and breadths are from the tables on page 168, the host egg lengths and breadths from Appendix IV on page 176, and the color match counts from the table on page 171.

Source

Latter, O.H., 1902. The egg of {it cuculus canorus}. an inquiry into the dimensions of the cuckoo's egg and the relation of the variations to the size of the eggs of the foster-parent, with notes on coloration, &c. {em Biometrika}, 1:164–176.

Examples

cuckoohosts
str(cuckoohosts)
plot(cuckoohosts)
with(cuckoohosts,
     plot(c(clength,hlength),c(cbreadth,hbreadth),col=rep(1:2,c(6,6))))

[Package DAAG version 0.76 Index]