Birds have delicate, hollow bones to lighten their weight while dinosaurs had solid bones. The placement and design of bird bones may be analogous to those in dinosaurs, but they are actually quite different. While dinosaur metabolism is in question, all modern reptiles are cold-blooded with a more lethargic life style. Birds are unique among land-dwelling vertebrates in that they don't breathe in and out. The air flows continually in a one-directional loop supporting the bird's high metabolism.
Reptilian respiration is entirely different, more like that in mammals.
It gets even worse, for in order to make the transition, most if not all of the definitive characteristics must be acquired simultaneously. They all must be present or else none serves a valid purpose. Evolutionary stories don't fit the facts. As a missionary organization, ICR is funded by God's people. The majority of its income is provided by individual donors who desire to proclaim God's truth about origins.