Prove that statement.
They do.
Trust me. I have several degrees in biology.
Here's the evidence:
According to a Gallup Poll, 95% of scientists across all disciplines accepted the theory of evolution in one form or another.
In fields specifically related to evolutionary science, (e.g. biology, paleontology, etc.) it is suggested the proportion is even higher. Take for example, NCSE's Project Steve , where over 600 PhD. scientists named Steve have signed a list supporting the ToE, whereas groups like the Discovery Institute have generated lists of similar length of creationists of all names. Less than 1% of scientists are named Steve; so you do the math.
If a significant proportion of scientists reject the theory of evolution, and instead support creationism or intelligent design, where are all the mainstream journal entries on this topic? None exist. Search New Scientist or Nature - you won't find them.
Also, a very partial list of mainstream scientific organizations that have issued statements in support of the tenet that evolution is mainstream science theory, whereas ID and creationism are not.
Let's face it - in the scientific world, evolution reigns supreme (for good reason) - ID and creationism are afterthoughts that are not supported by the wealth of available evidence - hence their lowly scientific status.