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ne problem is the construction of new homes in a narrow .. ................ of land on the pronghorns’ route.

However, their route between these two areas contains three .................. .

Local gulls and migrating arctic terns behave in the same way when offered food.

Dingle's aim is to distinguish between the migratory behaviours of different species.

Pronghorns rely on their eyesight and ................. to avoid predators

During migration, animals are unlikely to...

Aphids’ journeys are affected by changes in the light that they perceive.

Experts’ definitions of migration tend to vary according to their area of study.

One particular population’s summer habitat is a national park, and their winter home is on the .................. where they go to avoid the danger presented by the snow at that time of year.

To prepare for migration, animals are likely to....

Arctic terns illustrate migrating animals’ ability to.....

Very few experts agree that the movement of aphids can be considered migration.

According to Dingle, migratory routes are likely to......