Should Evolution and Creation be Taught in School?

I think you may be misinterpreting the word usage as moving the goal posts. As I said, the word 'species' to me, a non-scientist, could have a different, less limited meaning than to a scientist using the word every day.I see color change, hair development or loss, change in a mating call, etc. as adapting to the surroundings as opposed to actual changes in the creature. What scientific term that would be, I'm not sure.

Okay, I see a jackass and a horse as different 'species'. They can interbreed but as far as I know the offspring is sterile. But, an Appaloosa horse is not a different 'species' from a Bay or Buckskin, yet the coloring is much different and they have different conformations, etc. Does that clear my position up a little? If the definition of a different species is that the offspring is sterile, wouldn't that make two birds with only their song different, the same species?