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 hawk-eagle particularly towards the bill, is also black. The wings are black, and the bird has a brownish tail barred black-dark grey and with white tip. The iris is orange, the feet pale to bright yellow with black talons. The bill is black with a yellow cere. The sexes are alike in color, but the female is larger. Immature birds have pale edges on the upperwing coverts and some brownish-grey feathers on the back. The black-and-white hawk-eagle is hard to confuse with any other bird in its range. The black-faced hawk ("Leucopternis melanops") is very similar in overall coloration, but it