Islands are known to differ in the food supply available to ground finches, mainly seeds. Peter R. Grant differfinchfood Change image and share on social
We observe closely related species in sympatry and infer how they evolved from a common ancestor. Peter R. Grant ancestorcloselycommon Change image and share on social
Closely related species of birds are also chromosomally similar. Peter R. Grant birdchromosomallyclosely Change image and share on social
To summarize, the particular song a male sings, and the behavioral responses of females to song and morphological signals, are not genetically inherited in a fixed manner but are determined by learning early in life. Peter R. Grant behavioraldetermineearly share on social
Genes that underlie the capacity to receive, use and transmit information are the evolving properties. Peter R. Grant capacityevolvegene Change image and share on social
Thus mating of females was strictly along the lines of paternal song. Peter R. Grant femalelinemate Change image and share on social
The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted. Peter R. Grant associationchoicedisrupt Change image and share on social
