Galapagos Finches (also known as Darwin’s finches) do not usually interbreed due to their differences in beak shape, behavior, geographic isolation, ecological niches, and habitat. This has led to the diversification of their species. Interbreeding is rare, but it can occur when species are closely related. It usually results in hybrids that have a lower survival rate and less reproductive success. Evolutionary pressures have led to unique adaptations in each finch species. This has helped maintain the distinct ecological role and characteristics of these species.