As others have said, this is a side discussion inspired by the headline but not really related to the article.
That said, there is no proto-chicken that laid a chicken egg or a chicken hatching out of a proto-chicken egg. There was no “first chicken.” Populations evolve, not individuals. Let’s not confuse a de novo mutation with evolution. Evolution is a change in allele frequencies over time, and speciation is reproductive isolation of populations experiencing allele frequency shifts.
There are still population-wide polymorphisms in humans that are present in gorillas but have been fixed in chimpanzees. Populations of proto-chickens gradually evolved into chickens, but if there were a hard line to define the distinction (like the wavelength where orange ends), then there would have been a long time of proto-chickens and chickens interbreeding and their descendents oscillating back and forth between the two definitions over generations.
I agree. Between this and 9/11, Obama has a lot of explaining to do.