[Echo Talon]

that didnt turn into a different species. that would be an example of microevolution.

[Thatcherite]

that didnt turn into a different species. that would be an example of microevolution.

The Southern ones can't interbreed. They look different. If a cataclysm had destroyed the Northern areas before we found them we'd definitely regard them as a separate species. Yet we can see the gradations back to them being the same species. Ring species permit us to see the process of speciation in action. The distinction that you make between microevolution and macroevolution is a false one. Macroevolution is simply many generations of microevolution.

[AntiGuv]

Microevolution leads to macroevolution. The reason that the salamanders at the ends which cannot interbreed are not considered a different species is because each subspecies can breed with the neighboring subspecies. But, by the time the ends of the ring meet they can no longer interbreed - they've evolved apart. If you got rid of the transitional populations in between, you'd officially have different species.

Another example is the Greenish Warbler:

[AntiGuv]

And another is the Larus Gull:

[AntiGuv]

Opps! I meant Herring Gull..