This painting is talking about the ability to accept the different and unfamiliar.
Normally Peace is symbolized by a white dove but in this case it's a little devil that asking to make amends. The peace offering of the devil is symbolized not by a white dove but by a single red feather and the question is: will it be accepted?
Can we recognize gestures of good will and peace offerings that are different from what we familiar with? Will we be able to accept them and by that gain friendship, good relationship or other?