News Round-Up

Migrating animals ‘live fast and die young’


University of Exeter scientists studied almost 1,300 mammal and bird species and found migrants generally develop faster, produce offspring earlier and die younger than similar, non-migratory species.

The researchers also found that walking and swimming migrants are usually larger than their non-migrating relatives, while flying migrants are smaller.

The findings may partly explain why many migratory species are in decline, as “faster” lives may make them less able to adapt to changes in habitats and the climate – for example, by delaying breeding if conditions are poor. MORE