Thank you all for what to do with this swallow. i shall freeze it and note details and take it to Emily Braker at the UC Boulder Museum. This is closer to me than Denver. An interesting thing about this dead Violet-green swallow is that there were (are) hundreds of Barn Swallows and Cliff swallows, a few Tree swallows around the lake and NO Violet-green swallows except this dead and still warm one which was on the grass near the monument on the south side of Lake McIntosh. And I never see VG swallows on this lake before... Last year I found a dead Raven closeby this spot and it, too, was still warm and in perfect condition. I wasn't able to keep it (I've been warned by my fam before about keeping dead birds in the fridge...), but that's two perfectly healthy looking birds just falling out of the sky! Thanks again - Dave/Longmont
Here's a photo of the swallow on the Lake McIntosh monument: