A scholarly, readable account of Grant's comprehensive study of Darwin's finches, including a forward by Jonathan Weiner (who wrote "Beak of the Finch") and an update by Peter Grant -- who has devoted his life's work to the evolution and ecology of these curious Galapagos birds. For those not put off by charts and tables and the language of population ecology, it's a fascinating book and an excellent example of a long-term ecological study. A volume in "Princeton Science Library" and modern classic of evolution first published in 1986. With 20 color illustrations.  (GPS44, $41.00)