Avro Bison ‹› Overview The Avro 555 Bison was a British single-engined fleet spotter/reconnaissance aircraft built by Avro. Specifications Aircraft Roles Reconnaissance Aircraft Country United Kingdom Timeline 1920s First Flown 1921 Manufacturer Avro aircraft Configuration Wing Biplanes Types Single-engine aircraft Single-Engined Tractor Aircraft Tractor Aircraft View on Wikipedia → ◀ Armstrong Whitworth Wolf Blackburn Airedale ▶ Similar Aircraft Supermarine Southampton United Kingdom 1920s Supermarine Seagull (1921) United Kingdom 1920s Blackburn Blackburn United Kingdom 1920s Parnall Peto United Kingdom 1920s Westland Walrus United Kingdom 1920s Supermarine Swan United Kingdom 1920s