Linked from

The 19 pages that link to Darwin's finches, each with the reason it gives.

• BiogeographyBroader topic: The classic case of island colonization followed by adaptive radiation.

• Adaptive radiationBroader topic: Their varied beaks and diets illustrate diversification across food niches.

• Evolutionary developmental biologyBroader topic: Changes in beak development help explain how ecological adaptation produces different forms.

• BeakBroader topic: Their beak variation is a classic case of adaptation to different food sources.

• HomologyBroader topic: Their shared ancestry and divergent beaks show how inherited traits change within a lineage.

• IntrogressionRelated: Hybridization and inherited beak-related variants show how gene exchange can shape population traits.

• Galápagos IslandsBroader topic: Their differences illustrate how related island populations can specialize in distinct niches.

• SpeciationBroader topic: Their diversification illustrates how ecological differences and restricted gene flow can interact.

• Allopatric speciationRelated: Their diversification across islands illustrates geographic separation alongside ecological divergence.

• HMS BeagleBroader topic: Their variation became emblematic of the biological diversity Darwin encountered, though its significance developed later.

• GymnotiformesCompared with: Unlike these island birds, gymnotiform diversity arose chiefly in connected continental freshwater systems.

• OrnithologyBroader topic: Their variation became a classic case for studying natural selection in birds.

• Voyage of the BeagleBroader topic: Their island differences became a celebrated example of adaptation, though Darwin’s insight developed after the voyage.

• Robert FitzRoyBroader topic: The Beagle voyage under FitzRoy’s command brought Darwin to the Galápagos and its distinctive fauna.

• FinchBroader topic: Their bill diversity makes finches a celebrated example of adaptation.

• BillBroader topic: Their bill variation illustrates adaptation to distinct food sources.

• SubspeciesRelated: Their variation illustrates how population differences can precede or accompany species formation.

• Divergent evolutionBroader topic: Their beak differences track adaptations to distinct food sources on different islands.

• MacroevolutionBroader topic: Their diversification links observable adaptation with the origins of species-level diversity.