migration是什么意思？

Urbanization – migration away from the suburbs and to the city center – will be the biggest real estate trend in 2015, according to a new report.

They have led some birds to give up on migration.

They have changed the previous migration habits of certain birds.

They are not attracted to the rubbish dumps on their migration routes.

Researchers in Germany used miniature GPS tags to track the migrations of 70 white storks ( ' , 鹳) from different sites across Europe and Asia during the first five months of their lives.

Andrea Flack of the Max Planck Institute found that birds following traditional migration routes were more likely to die than German storks that flew only as far as northern Morocco, and spent the winter there on rubbish dumps.

You will hear more and more about migration between countries and between rural areas and cities.

Every year in the late summer, monarch begin their migration to the south, those heading for Mexico go first for the Louisiana Mississippi region.

Scientists learn about the monarch butterflies' migration by capturing and placing the identifying tags in the insects

Where does the butterfly settle at the end of the migration?

Migration patterns of monarch butterflies