People more likely to migrate from small cities than large ones

Migration continues to be a frequently debated subject, with 68 percent of the world population projected to live in urban areas by 2050, according to a U.N. report. Although well-managed migration could be beneficial for ...

Study of bird migration tricky due to hybridization

Hybridization among bird species is a widespread phenomenon, which is best illustrated in Estonia by the lesser spotted eagle and the greater spotted eagle. However, due to the fact that the migration strategies of both bird ...

Where will future migrants come from?

In times of desperation—after a hurricane flattens a community, for example, or droughts cause widespread hunger—people inevitably search for better lives and better opportunities elsewhere. In some cases, migrants may ...

Birds' migration genes are conditioned by geography

The genetic make-up of a willow warbler determines where it will migrate when winter comes. Studies of willow warblers in Sweden, Finland and the Baltic States show that "migration genes" differ - depending on where the birds ...

What's cuing salmon migration patterns?

The spring-fed water that flows through Hansen Creek in southwestern Alaska is almost always clear. Its rate and temperature stay relatively constant throughout the year. Each summer, sockeye salmon migrate through the shallow, ...

Mapping migrations by using mobile phone data

Researchers from the Complex Systems Group (GSC) at Universidad Politécnica de Madrid (UPM) have used mobile phone data generated by 9 million users to study the mobility of population from Senegal. Results show a clear ...

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