Flt Lt P. W. S. Bulman demonstrates the modified Condor IV-engined Hornbill for Flight at Brooklands in July 1926. Note the Hendon “new type" number on the fuselage.

A Hawker photograph of the Hornbill shortly after completion, July/August 1925, with Fairey Reed metal propeller.

Taken by Flight at Brooklands in August 1925, this view of the Hornbill in its first form shows the underwing radiators and the deep rear fuselage. Pictures from this series were not published until June 1926.

Bulman demonstrating the modified Hornbill for Flight in July 1926. Pictures taken during the session were first published only a month after the first appearance of pictures taken 11 months earlier. Note the increased fin area.

Taken during the Hornbill's first visit to Martlesham Heath, late 1925/early 1926, the picture shows the outer thirds of each radiator blanked off owing to overcooling problems. The shutters are closed as well.

A Flight photograph taken in August 1925 shows the twin underwing radiators, tightly-contoured cowling and the wooden Watts propeller, minus spinner.

Another Flight study of the Condor III version in August 1925, showing the blast channel for the Vickers gun.

At Brooklands about the time of the 1926 RAF Display, the newly re-engined Hornbill reveals its underfuselage Serck radiator and the sleeker cowling.

A Hawker inboard profile of the forward fuselage, dated May 1925, shows the Condor III installation, with underwing radiators. Although the Vickers machine gun is shown, the CC interrupter gear was not compatible with the engine.