Vanessa cardui migrations take place at high altitude, which explains why these migrations are seldom witnessed. "V. cardui" is known for its distinct migratory behavior. In California, they are usually seen flying from north to northwest. These migrations appear to be partially initiated by heavy winter rains in the desert where rainfall controls the growth of larval food plants. Painted lady migration patterns are highly erratic and they do not migrate every year. Some evidence suggests that global climatic events, such as el Niño, may affect the migratory behavior of the painted lady butterflies, causing large-scale migrations. Based on experimental data, the
Black-and-orange flycatcher insects an hour whereas at mid-day they are half as efficient. The black-and-orange flycatcher along with the rufous-chested flycatcher ("Ficedula dumetoria") are the only sedentary species within the genus "Ficedula" and lack the longer and more pointed wing morphology of the long distant migrant members. Black-and-orange flycatcher The black-and-orange flycatcher or black-and-rufous flycatcher ("Ficedula nigrorufa") is a species of flycatcher endemic to the central and southern Western Ghats, the Nilgiris and Palni hill ranges in southern India. It is unique among the "Ficedula" flycatchers in having rufous coloration on its back and prior to molecular studies was suggested to be