Birds and Dinosaurs

The theory of evolution holds that birds evolved from carnivorous theropods. However, a comparison between birds and reptiles reveals that the two have very distinct features, making it unlikely that one evolved from the other.

There are various structural differences between birds and reptiles, one of which concerns bone structure. Due to their bulky natures, dinosaurs-the ancestors of birds according to evolutionists-had thick, solid bones. Birds, in contrast, whether living or extinct, have hollow bones that are very light, as they must be in order for flight to take place.

Another difference between reptiles and birds is their metabolic structure. Reptiles have the slowest metabolic structure in the animal kingdom. (The claim that dinosaurs had a warm-blooded fast metabolism remains a speculation.) Birds, on the other hand, are at the opposite end of the metabolic spectrum. For instance, the body temperature of a sparrow can rise to as much as 48°C due to its fast metabolism. On the other hand, reptiles lack the ability to regulate their body temperature. Instead, they expose their bodies to sunlight in order to warm up. Put simply, reptiles consume the least energy of all animals and birds the most.

One of the best-known ornithologists in the world, Alan Feduccia from the University of North Carolina, opposes the theory that birds are related to dinosaurs, despite the fact that he is an evolutionist himself. Feduccia has this to say regarding the thesis of reptile-bird evolution:

Well, I've studied bird skulls for 25 years and I don't see any similarities whatsoever. I just don't see it... The theropod origins of birds, in my opinion, will be the greatest embarrassment of paleontology of the 20th century.108

Larry Martin, a specialist on ancient birds from the University of Kansas, also opposes the theory that birds are descended from dinosaurs. Discussing the contradiction that evolution falls into on the subject, he states:

To tell you the truth, if I had to support the dinosaur origin of birds with those characters, I'd be embarrassed every time I had to get up and talk about it.109

Yet, despite all the scientific findings, the groundless scenario of "dinosaur-bird evolution" is still insistently advocated. Popular publications are particularly fond of the scenario. Meanwhile, concepts which provide no backing for the scenario are presented as evidence for "dinosaur-bird evolution."

In some evolutionist publications, for instance, emphasis is laid on the differences among dinosaur hip bones to support the thesis that birds are descended from dinosaurs. These so-called differences exist between dinosaurs classified as Saurischian (reptile-like, hip-girdled species) and Ornithischian (bird-like, hip-girdled species). This concept of dinosaurs having hip girdles similar to those of birds is now and then taken as evidence for the alleged dinosaur-bird link. However, the difference in hip girdles is no evidence at all for the claim that birds evolved from dinosaurs. That is because Ornithischiandinosaurs do not resemble birds with respect to other anatomical features. For instance,Ankylosaurus is a dinosaur classified as Ornithischian, with short legs, a giant body, and skin covered with scales resembling armor. On the other hand, Struthiomimus, which resembles birds in some of its anatomical features (long legs, short forelegs, and thin structure), is actually a Saurischian.110

In short, the structure of the hip girdle is no evidence for an evolutionary relationship between birds and dinosaurs. The claim that dinosaurs resemble birds because their hip girdles are similar ignores other significant anatomical differences between the two species which make any evolutionary link between them untenable from the evolutionist viewpoint.

108 Pat Shipman, "Birds Do It... Did Dinosaurs?," New Scientist, 1 February 1997, p. 28.
109 Pat Shipman, "Birds Do It... Did Dinosaurs?," New Scientist, 1 February 1997, p. 28.
110 Duane T. Gish, Dinosaurs by Design, Master Books, AR, 1996, pp. 65-66.