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"Closely related species of birds are also chromosomally similar."
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"The parish I live in is a very abrupt, uneven country, full of hills and woods, and therefore full of birds."

"Use what talents you possess; the woods would be very silent if no birds sang there except those that sang best."

"Did St. Francis preach to the birds? Whatever for? If he really liked birds he would have done better to preach to the cats."

"But hopes are Shy Birds flying at a great distance seldom reached by the best of Guns."
Explore more quotes by Peter R. Grant

"The theory of founder effects does not explain how novel features like plumage traits arise."

"Almost nothing is known from hybridization studies about the inheritance of courtship behavior of females, or of their responsiveness to particular male signals."

"Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection."

"Genes that underlie the capacity to receive, use and transmit information are the evolving properties."

"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."

"Exchange of breeding individuals between two populations tends to homogenize their gene pools."

"The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted."
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