The first description in what you pointed to says "could signify the beginning of a speciation event". It doesn't say the result is a new species.
The second description concerns a pairing between two hybrids which started a new lineage. It uses the term "lineage" instead of saying there is a new species.
> These two examples make it clear that the division between species is not a black-and-white issue. Rather, speciation occurs as many different sorts of traits (physical, behavioral, and genetic) diverge from one another along a continuum. Because of this, biologists sometimes disagree about where to draw the line between incipient species — about when a division has become deep enough to warrant a new species name. Whatever we choose to call them, these two cases clearly illustrate how a lineage can split and begin to make its way down two separate evolutionary paths.
Regarding ring species, https://en.wikipedia.org/wiki/Ring_species says "Currently, there are four known forms of life that appear to match the definition of a ring species". Frankly, I thought there were more. It would suggest that birds don't tend to rapidly form ring species.
> You do not need a 1000 generations to speciate.
Are either of those two cases described in the literature as a new species, or are they given as a subspecies, or variant, or fertile hybrid, or some other term?
Yes they are a species, i think you are working on a different definition of a species than the accepted common one.
Also don't rely on wikipedia for accurate information about many subjects, it's ok but it's far from perfect or being technically correct.
As for the rest of your argument that's semantics and it clearly misses the conclusion of that article:
"While we can't know the fates of these lineages, directly observing such divergences in real time highlights the fact that we don't always need to look into the distant past or far off future to find examples of speciation in action. Evolution is occurring all around us. We just need to learn where and how to look for it."
We have examples of speciation and divergence in real time over a handful of generations, a species at the end is a group which is capable and practices interbreeding amongst its members but does not breed with others.
My definition is: has it been assigned a binomial name? I'll also accept if the process has started.
The PNAS paper for the first event does not give a binomial. It says:
> We treat the endogamous group as an incipient species because it has been reproductively isolated from sympatric G. fortis for three generations and possibly longer.
I was not aware that this was the accepted common definition of a species.
The second also does not give a binomial. It describes a method to "initiate evolution of reproductive isolation among sympatric populations".
Is that enough to say that there is a new species? If so, I was not aware that the threshold for a species definition was so sensitive.
The second description concerns a pairing between two hybrids which started a new lineage. It uses the term "lineage" instead of saying there is a new species.
> These two examples make it clear that the division between species is not a black-and-white issue. Rather, speciation occurs as many different sorts of traits (physical, behavioral, and genetic) diverge from one another along a continuum. Because of this, biologists sometimes disagree about where to draw the line between incipient species — about when a division has become deep enough to warrant a new species name. Whatever we choose to call them, these two cases clearly illustrate how a lineage can split and begin to make its way down two separate evolutionary paths.
Regarding ring species, https://en.wikipedia.org/wiki/Ring_species says "Currently, there are four known forms of life that appear to match the definition of a ring species". Frankly, I thought there were more. It would suggest that birds don't tend to rapidly form ring species.
> You do not need a 1000 generations to speciate.
Are either of those two cases described in the literature as a new species, or are they given as a subspecies, or variant, or fertile hybrid, or some other term?