Description

Approximate dates of immigration for 37 species of birds in the Lesser Antilles.

Format

A data frame with 37 observations of one variable.

immigration.date

approximate immigration date (in millions of years)

Source

inferred from Ricklefs, R.E. and E. Bermingham. 2001. Nonequilibrium diversity dynamics of the Lesser Antillean avifauna. Science 294: 1522-1524.

References

http://www.sciencemag.org/cgi/content/abstract/sci;294/5546/1522

Examples