During the cold winter months in Germany, glassblowers often keep birds in cages to offer them shelter and to enjoy their melodies. These birds gave craftsmen companionship and inspiration for creating new ornament moulds. The glass-blower family Mueller-Blech was always known for the production of glass birds. Still today they are producing an amazing variety of this popular ornament in stunning designs. Birds are symbols of joy and happiness, they are said to be messengers from God and the embodiment of souls.