aeroplanes

Am I seeing something that is not there or is there an odd sort of border around the aircraft? Could it have been added in to this image?

The Tiger Moth became the primary trainer throughout the Commonwealth and elsewhere. It was the principal type used in the British Commonwealth Air Training Plan, where thousands of military pilots got their first taste of flight in a Tiger Moth. The RAF found the Tiger Moth's handling ideal for training fighter pilots. Generally docile and forgiving in the normal flight phases encountered during initial training, when used for aerobatic and formation training, the Tiger Moth required skill and concentration to perform well; a botched maneuver could cause the aircraft to stall or spin. From 1941 onwards, all military and many civilian Tiger Moths were outfitted with antispin strakes positioned on the junction between the fuselage and the leading edge of the tailplane, known as Mod 11'; later on, the aileron mass balances were removed for improved spin recovery performance.[16] Source: en.wikipedia.org/wiki/De_Havilland_Tiger_Moth

The de Havilland DH 82 Tiger Moth is a 1930s biplane designed by Geoffrey de Havilland and was operated by the Royal Air Force and others as a primary trainer. The Tiger Moth remained in service with the RAF until 1952 when many of the surplus aircraft entered civil operation. Many other nations used the Tiger Moth both in military and civil applications and the ubiquitous little trainer is still in great demand worldwide as a recreational aircraft. It is still occasionally used as a primary training aircraft, although now most Tiger Moths employed in training duties are used by pilots gaining experience for 'taildragger' license ratings. Source: en-academic.com/dic.nsf/enwiki/290566