I have just learned that sometimes loons, and other birds like grebes, will land on the pavement, or other places, at night because it looks like water. I never knew that they would be unable to take off from that landing and are susceptible to predators and even starvation. Apparently, if you find one of these birds, you are supposed to call a certified "rehabilitator" to check out the bird and to get it back in the wild. Below is a link I have found that will locate one of these people for you in whatever county you are in. If anyone has actually done this, please let me know how it worked out. (Gary)
http://www.michigandnr.com/dlr/