One little problem with Darwin's finches is also not mentioned in textbooks - they are not separate species. They can interbreed and do interbreed. The progeny of the 'mixed' breeds are even more viable and produce more progeny than those of unmixed breeds.
It should be noted what this shows about evolutionist 'science'. Whether due to incompetence, or willful fraud, evolutionists have been saying for decades that these were separate species. No one bothered to check whether they did indeed breed or covered it up purposely. Evolution is not science, it is garbage. The respect for the truth and for careful examination of the facts is not there at all.
Which textbooks would that be? Are you aware that "Darwin's Finches" was published quite recently?
The progeny of the 'mixed' breeds are even more viable and produce more progeny than those of unmixed breeds.
You'll forgive me if I am skeptical that the point of the book was ever that these finch species were fully differentiated.
Since the finch beaks are evolved to fit up to specific physical problems in aquiring their diet, you'll forgive me if I am somewhat skeptical of the notion that, after selection, the mixed populations proved more viable than the purebreds.
. Whether due to incompetence, or willful fraud,
Good grief, what a drama queen. I'm sure thousands of biological scientists conspired to hide the unbelievably horrible fact that finches will occasionally try to interbreed. Must have been quite expense maintaining this vast finch conspiracy.
evolutionists have been saying for decades that these were separate species
Speciation is a gradual, partial thing. Only in comic book simplifications of evolutionary theory is it supposed that one species produces another flash/bang/boom. Speciation in action is a gradual attenuation of interbreeding capacity between populations.
What you are objecting to is the violation of an imaginary barrier, which only exists for the purpose of simplifying the theory enough to explain it to children and desultorily interested adults. The finches are differentiated enough to make a reasonable case. Cats and dogs have been known to produce breathing offspring. Do you wish to forward the claim that cats and dogs are identical species? How about donkeys and horses? How about camels and llamas? How about adjacent Herring Gulls that can interbreed with their immediate neighbors in the other directions, but not with each other? Should we declare each time zone's Herring Gulls to be a separate species?
As with so many creationist arguments, this is raising a barrier based on a far too simplistic model of what is actually being said and demonstrated by scientists.