...."evidence?" Universally heralded as the one great "link" between all birds and reptiles is Archaeopteryx. Here is how evolutionists imagine Archaeopteryx may have been preserved as a fossil.
There are many links between birds and other reptiles, seen in fossils, DNA, sex-determination systems, body construction, etc.
Evolutionists admit they must SPECULATE about the origin of birds. But they insist that the layman need not even question the validity of their theories!
I could speculate about your parentage, but nonetheless you would have been born of a human. Speculations about some of the details of the origins of birds does not change the basic truths.
But if our myriads of birds evolved from slimy reptiles, is there any REAL fossil EVIDENCE of a
part-bird, part-reptile? Is there such a thing as a HALF-scale, HALF-feather found?
The presence of a half-scale, half-feather would be a miracle, not evolution.
Feathers and scales are made up of two distinct forms of keratin, and it was long thought that each type of keratin was exclusive to each skin structure (feathers and scales). However, a study published in 2006 confirmed the presence of feather keratin in the early stages of development of American alligator scales.
https://en.wikipedia.org/wiki/Feather#Evolution
Where are all the many HUNDREDS of VERY DIFFERENT creatures which would have represented the INTERMEDIATE stages of development?
https://en.wikipedia.org/wiki/Feathered_dinosaurs
https://en.wikipedia.org/wiki/List_of_fossil_bird_genera
And remember, IF these notions of evolution could possibly be true - these "intermediate" stages would be NOWHERE NEAR so well equipped to survive as the "fully developed" ones.
Compared to which other contemporaneous, partially flying vertebrates?