1, Yellow rump and pale chestnut underwing with black trailing edge especially noticeable in flight.

2, Armament underwing comprises a UV-16-57 rocket pod on the outer pylon and an inert AA-8 Aphid air-to-air missile on the inner pylon.

3, I think the white underwing flash is more restricted on Sooty, but is very white and should contrast strongly against a darker body.

4, The two underwing stations could carry two PL-5 IR guided AAMs, unguided rocket pods or free-fall bombs.

5, The wing was braced by tubular steel struts located between the hull and underwing surfaces.

6, Differs from marsh terns in winter by square white tail, smoky underwing and no sharply defined white shoulder.

7, Spotting rather than barring on tail is a useful pointer, as is contrast between heavily spotted underwing and pale wing tips.

8, Suddenly a flock of all-dark shearwaters appeared, only the underwing showing a pale smudge.

9, At rest male's yellow wings and in flight white underwing contrasting strongly with black belly are useful pointers.

10, For example, Windmill and his team discovered that the yellow underwing "moth cleverly tunes its ear to enhance its detection of bats."

11, The bird is in moult, and it may be the case that a lot of feathers have been lost from the underwing in one go,(http:///underwing.html) producing this white patch.

12, The acquisition of the Il-78 tankers is a major departure for the PLAAF, which currently relies on about 10 Xian H-6Us – obsolete H-6 bombers fitted with underwing hose-and-drogue pods.

13, When stealth is no longer critical, the Lightning II can carry 18,000 pounds of ordnance on eleven underwing and fuselage stations for air interdiction and close air support missions.

14, The basic trainer is not armed, but has two underwing pylons for drop tanks and practice weapons.