Evolution, paleontology and geology and biology in general are definitely threat to religion in both forms most popular today - strict Bible/Koran conservative literalist faith and fluffy liberal one.
Firstly, looks to me that the predominant religion is environmentalism, and evolution is no threat to environmentalism, but natural selection is.
Secondly, if you insist on religion strictly defined, religions that frankly admit that they are religious, these days most of them propose theistic evolution. Only a minority of believers propose that the world was created a few thousand years ago.
What the Fish and Wildlife service attempts to enforce, looks very much like theistic evolution also. Consider, for example, the red wolf controversy and the Californian spotted owl controversy. If you believe in natural selection, they should not attempt to enforce their official government species definitions on nature, when the creatures concerned keep having sex with each other regardless of official species boundaries. The barred owl is superior to the spotted owl, which may well be the reason why female spotted owls like to have sex with barred owls. If you believe that nature should take its course, let nature take its course.
And the case for all-loving, all-forgiving god or "spiritual force" is refuted even more decisively.
Natural selection refutes the case for a nice god. However, the Fish and Wildlife service is attempting to enforce a concept of nature and evolution that owes more to Disney films such as "Bambi", which version of evolution is entirely compatible with a nice guy god.
In an Open Thread comment beriukay mentioned that he's reading C.S. Lewis' Mere Christianity. I've been reading it too, for interesting reasons.
In my case it so happened that I started discussing faith with a long-time online friend whose spiritual views I didn't yet know, and he turned out to be a Christian with a high regard for the Bible, who also has an interest in science. As our discussion turned to our readings on spirituality, I acknowledged (I think it was me) that I probably spent more time on books that reinforce my point of view than on books that challenge it, perhaps a case of confirmation bias. (I've been exposed to many poor arguments for Christianity, and dismissed them; but possibly that was largely a function of having started out with that bottom line already written and picking arguments I wouldn't have much trouble refuting.)
In the spirit of experiment we agreed to a "trade" - he would read (thoughtfully and with an open mind) a book of my choosing on reasons to doubt faith, and I'd do the same with a book he chose on Christianity.
So the idea here is to pick a book that's the "best argument from the other side" (as in quote 3 here).
I recommended The God Delusion - I'm not sure if that's the best choice given the above intent, but it's what came to mind on the spot.
Would you make a different choice? If so, what?