| The outward migration of people from the city has hurt the city's economy greatly. |
| The primary physiological cue for migration are the changes in the day length. |
| Dates for Paleo-Indian migration out of Beringia are a matter of current debate. |
| For birds wintering at that northerly location, spring migrations may be less arduous, leading to increased survival and breeding success. |
| Centrosomes also mediate nuclear migrations in a variety of cells and organisms. |
| During these long migrations they are extremely vulnerable to attack by predators. |
