This is necessary because Istanbul has been growing at tremendous speed with extensive migration from rural areas of the country. (dotearth.blogs.nytimes.com)
It seems that although zebra finches do not undertake extensive migration, they still might be able to use the magnetic compass for local navigation,» says Atticus Pinzón - Rodríguez. (sciencedaily.com)
Despite extensive migrations, the loggerhead turtle returns to nest in the region where it hatched (natal philopatry). (sciencedaily.com)