What exactly do you mean by "Odd and Unusual"?
And I dont know about muscovies, but in general you should look for-
*Bright Eyes, No snot or lethargic-ness
*Alertness, Awake, Standing
*Non-Aggressive if Possible (Handraised)
*No deformities like Splay Leg
*Nothing Overly Dirty or unhealthy looking.