Even the purported transitional fossils leave wide gaps in an evolutionary cycle which would have required many intermediate stages between each species. Especially destructive to the evolutionary theory are the abrupt appearance of advanced fossils in the geological column. Darwin foresaw the problem of these sudden appearances when he said, If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive modifications, my theory would absolutely break down. Also very unexplainable by evolutionary theory is the miracle of flight. Nearly every structure in a non-flying animal would need to change.
Bird bones are hollow and therefore light.
Bird feathers are a unique system of interlocking barbs and barbules, keeping the surface flexible yet intact. These sliding joints in the feathers are oiled from a preening gland at the base of the spine. A half-developed feather, or a feather without oil, would be worse than useless. Also called into question is the carbon 14 dating method, which is used to support the theory of the vast age of the rocks and fossils, but which has been shown to be unreliable for periods longer than about 4,000 years. Much of this just cannot be so overly simplified by accounting for it as a means toward reproduction.