is humanity considered a rings species?

Question

i was reading about rings and the qualifactions to be a ring species are to have some differences in the population groups and that only some populations were able to interbeed with others.
it seems obvious that there are anyotomical differences amoung the human population groups, but they can all interbreed with one another.
so, is haumanity a ring? if not then is suspect it must be in a catogory all it's own, because no other species has spread across the earth like we have.

Make that 'Ring species'

Answer 1

no humans are not a ring species.
Not only ability to interbreed, but also putative migration pattern not appropriate.
I think house sparrows, pigeons, cockroaches, coli bacteria, house cats, fleas, house flies, mosquitos and so on are pretty widely distributed as well.
If you need to classify humans in that regard I would say they are generalists also as far as there biotope is concerned.

Answer 2

No, humans are one species with a few minor variations that tend to be more prominent in certain geographic areas but do not have sub-specific or race level status.

Ring species are those such as the herring gull in western Europe that is circumpolar in distribution but with minor variations as you get further west. If you track the species round to Europe it becomes the lesser black-backed gull which does not breed with the herring gull and is considered a different species in Europe.

Human variation is nowhere near as marked as that and all humans everywhere can interbreed. They are not different races let alone different species.