Princeton University researchers Peter and Rosemary Grant, whose work on Darwin's finches is considered a masterpiece of evolutionary ecology, will give four talks at UC Davis beginning Monday, Feb. 3. "The Grants are leaders of this field," writes Jonathan Weiner in the Pulitzer prize-winning book "The Beak of the Finch: A Story of Evolution in Our Time." Their Darwin's finches is "one of the most intensive and valuable animals studies ever conducted in the wild," Weiner writes. "It is the best and most detailed demonstration to date of the power of Darwin's process." Peter Grant's lectures are free and open to the public. His talks are: "The Adaptive Radiation of Darwin's Finches," on Monday, Feb. 3, and "Genetics and the Origin of Bird Species," Wednesday, Feb. 5. Both talks begin at 5:10 p.m. in 1100 Social Sciences and Humanities Building. Science reporters are also welcome at Rosemary Grant's talks for the evolution and ecology seminar series. She will give a seminar titled "Darwin's Finches and the Barriers to Gene Flow" at 4:10-5:30 p.m. Thursday, Feb. 6, 3 Kleiber Hall. She will give an informal talk on "Conservation Problems on the Galapagos" at 11 a.m.-noon on Friday, Feb. 7, 2124 Wickson Hall.