Migration patterns have changed dramatically over the past 50 years.

However, migration patterns cannot be assumed from a single site.

Job migration patterns have changed thanks to the economic crisis, say experts.

They are often observed in a sort of daily migration pattern as a result.

There is great variability in migration patterns within the family.

But the growth is too broad to be explained only by migration patterns.

The study found that the tuna had four different migration patterns.

Migration patterns have changed such that many species remain in an area during the winter months.

He also studied the connections between migration patterns and blood groups.

Tracking information is used to study their migration patterns, including how far and where they fly.

A person's occupation may have been related to his or her social status, political interest, and migration pattern.

There was a meeting of people working on archaic migration patterns.

Rural population trends are particularly subject to change due to their migration patterns.

There are frequently specific migration patterns, with geography, language and culture playing a role.

Among the possible environmental factors are infectious causes and migration patterns.

Migration patterns clearly had something to do with it, speakers said, and maybe racial politics too.

There are two significant migration patterns in the state.

"One of the things that welfare has masked is normal migration patterns."

The reasons for this split - and similar changes in migration patterns among other birds - are little known.

It is threatened by habitat loss and changing migration patterns.

The government monitors formal migration patterns for evidence of trafficking.

The internal migration patterns in the US are very interesting.

He based his findings on school records, migration patterns, military service documents and economic trends.

Migration patterns and spawning areas are key life history traits in the management of many species.