Plumage features constitute a major component of courtship signals. Peter R. Grant componentconstitutecourtship Change image and share on social
Species can be recognized by their morphological characteristics and songs. Peter R. Grant characteristicmorphologicalrecognize 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
Almost nothing is known from hybridization studies about the inheritance of courtship behavior of females, or of their responsiveness to particular male signals. Peter R. Grant behaviorcourtshipfemale Change image and share on social
The divergence of songs in the new population away from those in the progenitor population would only be prevented if these processes were balanced by repeated immigration and subsequent breeding: song flow. Peter R. Grant balancebreeddivergence share on social
Closely related species of birds are also chromosomally similar. Peter R. Grant birdchromosomallyclosely Change image and share on social
The theory of founder effects does not explain how novel features like plumage traits arise. Peter R. Grant ariseeffectexplain Change image and share on social
Exchange of breeding individuals between two populations tends to homogenize their gene pools. Peter R. Grant breedexchangegene Change image and share on social
Males transmit signals in courtship through behavioral displays. Peter R. Grant behavioralcourtshipdisplay Change image and share on social
Evidence of epistasis from hybridization studies is more scarce. Peter R. Grant epistasisevidencehybridization Change image and share on social
