Bird Amplifiers were made from the late 1950s until the mid 1960s by Sydney S. Bird and Sons of Poole, Dorset. Sydney Bird's company started out in the 1930s in Enfield making toys and electronics. They relocated to a larger factory Poole in 1953 and diversified into other products including electronic organs and in the late 1950s they added guitar amplifiers to their product line. The company stopped making amplifiers by 1966 in the face of strong competition from other British amplifier companies of the era.

This brand is not related to "Bird Brothers" amplifiers - these amplifiers were distributed in the 1970s and 1980s by brothers Peter and Arthur Bird who operated some music shops around Manchester, UK.

Source: Tim Fletcher and Steve Russell (4 June 2019)