A fossil is a standalone reality. Darwinism is a story that force-fits these standalone realities into a predetermined narrative. Watch how it is done.
Do documents evolve? Are birds that can interbreed still evolving? Darwinism becomes meaningless if everything that changes in some way is used as support for the theory.
Imagine spending 40 years of your life promoting Darwinian evolution with Galapagos finches, only to find out on Darwin Day that the birds hybridize and cross-breed.