There are lots of reasons we put different ornaments on our Christmas Trees...everything from the Pickle ornament to the Bird Nest all have a special reason or tradition.
According to Good HouseKeeping,
"Bird nests are a symbol of home. They represent the love, commitment and effort it takes to build a happy home. Bird nests are also good-luck symbols. Legend has it that prosperity will come to any home that finds a bird's nest nestled among the branches of the family Christmas Tree."
I will be getting a bird nest ornament, immediately!