Aw Libby…. so sorry to hear of your loss…. 🙁
Feathers, typically white, are often seen as a sign that Angels are surrounding you, and in this case as a sign of comfort to those who need it.
It is just so terribly sad and hard to deal with the loss of a loved one, that anything that brings you comfort…. whether it be a feather, a butterfly, a piece of music playing at an unexpected moment… all can just be signs letting you know that he is okay… 😉