Good morning FreyaRae 
A while ago, @berta gave us some wonderful information on feathers and their possible meanings → What Feathers Mean
@SilverBear also posted a lovely little podcast about signs → Is It A Sign? 
I think it’s also important to remember that molting feathers is a natural process for birds, especially as we move into Spring and warmer weather.
Feather molting in birds is a complicated process that can vary between individuals, species and years. Molting serves two purposes: to replace worn or damaged feathers, and to provide different plumage that helps indicate a bird’s age, sex, and season of the year, as many birds have differing winter and summer plumages. - ZooAtlanta
I am always of the opinion that if it’s significant in your life and has meaning for you, then you will feel it in your gut. You will know that it’s important. Your intuition will tell you 
It could be a sign from deity, a loved one across the veil, or your spirit guide. It could also just be a natural part of life and the order of the world 