From http://www.evolutionnews.org/2009/06/old_theories_die_hard_birdsevo.html

Two recent papers, one in the Journal of Morphology and another in Ornithological Monographs, as well as a ScienceDaily news release titled “Discovery Raises New Doubts About Dinosaur-bird Links,” contain criticisms by evolutionists of the dino-to-bird hypothesis that you would normally expect to hear only from skeptics of neo-Darwinism. Their remarks not only cover problems facing the dino-to-birds hypothesis, but also lament the politically motivated drive to push that hypothesis and ignore scientific dissent. The ScienceDaily article observes that some aspects of bird morphology are simply incompatible with the standard hypothesis that birds evolved from maniraptoran theropod dinosaurs.

And further down…

“Frankly, there’s a lot of museum politics involved in this, a lot of careers committed to a particular point of view even if new scientific evidence raises questions,” Ruben said. In some museum displays, he said, the birds-descended-from-dinosaurs evolutionary theory has been portrayed as a largely accepted fact, with an asterisk pointing out in small type that “some scientists disagree.”

Gosh, what a surprise.