Every situation is different and if you've never gardened in other places, then yes, you might burn your plants; however, in Colorado, the soil is nutrient deficient-- the chances of burning your plants due to Nitrogen overload is unlikely. With that said, I wouldn't risk it myself, but only because I know composting it first will yield a better additive to the garden in the end.
BTW-- chicken manure is some of the best for gardens so definitely use it.
My point of even posting a reply to this is to say that you can't apply a generalization to every situation without knowing what the differences of that situation are. The more fertile, lower-lying lands of the US will burn plants if fresh manure is applied-- that is not always the case elsewhere, though.
Did you guys get rain last night in Fort Collins? A heavy rog rolled through Parker... rog, for those wondering, is what I call a heavy fog that turns into a sort of rain. Love it! We never get enough rain here!