Vanessa cardui painted lady's migration pattern in northern Europe apparently does not follow a strict northwest heading. The range of headings suggests that migrating butterflies may adjust their migration patterns in response to local topographical features and weather, such as strong wind patterns. Laboratory-raised autumn-generation painted lady butterflies were able to distinguish a southern orientation for a return migration path. According to the same laboratory-based study, when butterflies were isolated from the sun, they were unable to orient themselves in a specific direction, opposed to those that did have access to the sun. This suggests that "V. cardui" requires a direct view
Black and white movies in black-and-white as an artistic choice, though it is much less common for a major Hollywood production. The use of black-and-white in the mass media often connotes something "nostalgic" or historic. The film director Woody Allen has used black-and-white a number of times since "Manhattan" (1979), which also had a George Gershwin derived score. The makers of "The Good German" (2006) used camera lenses from the 1940s, and other equipment from that era, so that their black-and-white film imitated the look of early "noir". In fact, monochrome film stock is now rarely used at the time of shooting, even