Also Quote by Peter R. Grant

Bird taxonomy is a difficult field because of the severe anatomical constraints imposed by flight. There are only so many ways to design a…

— Jared Diamond

Creatures of similar plumages habitually congregate in places of closest proximity.

— Bill Parcells

Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to…

— Peter R. Grant

“It has already been stated that various parts in the same individual, which are exactly alike during an early embryonic period, become widely different…

— Charles Darwin

On consideration, it is not surprising that Darwin's finches should recognize their own kind primarily by beak characters. The beak is the only prominent…

— David Lack

Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original paucity…

— Charles Darwin

Molecular genetics can show off some surprising relationships like, for example, the close relationship of whales to hippopotamuses, which I think nobody ever guessed…

— Richard Dawkins

In some domains it looks as though our identical twins reared apart are...just as similar as identical twins reared together. Now that's an amazing…

— Thomas J. Bouchard, Jr

We observe closely related species in sympatry and infer how they evolved from a common ancestor.

— Peter R. Grant

“human beings are actually more closely related to the two species of chimpanzees (Pan troglodytes, the familiar chimp, and Pan paniscus, the rare, smaller…

— Daniel C. Dennett

“Once we stop looking at each other as colors and simply as men and women we can begin to look at our similarities that…

— Kenneth G. Ortiz

We have the same genetic code for all living creatures. We have a large number of genes that are manifestly the same, but with…

— Richard Dawkins