jacamar: Jacamar Learning Ability Data
In SMPracticals: Practicals for Use with Davison (2003) Statistical Models

Description Usage Format Details Source Examples

Response of a rufous-tailed jacamar to butterflies, by not attacking them, by attacking but not eating them, and by attacking and eating them.

1	data(jacamar)

A data frame with 48 observations on the following 5 variables.

species: Butterfly species: Aphrissa boisduvalli (Ab), Phoebis argante (Pa), Dryas iulia (Di), Pierella luna (Pl), Consul fabius (Cf), Siproeta stelenes (Ss)
colour: colour butterfly wings were painted: Unpainted, Brown, Yellow, Blue, Green, Red, Orange, Black
N: Number not attacked
S: Number attacked but rejected
E: Number eaten

As part of a study of the learning ability of tropical birds, Peng Chai of the University of Texas at Austin collected data on the response of a rufous-tailed jacamar to butterflies. He used marker pens to paint the underside of the wings of eight species of butterflies, and then released each butterfly in the cage where the bird was confined. The bird responded in three ways: by not attacking the butterfly (N); by attacking the butterfly, then sampling but rejecting it (S); or by attacking and eating the butterfly, usually after removing some or all of the wings (E).

Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 470.