migration

Nothing wrong with this kind of migration, on the contrary.

And then the other thing is in versus out migration.

A bird has a band attached to its foot so we can learn about things like migration patterns.

They claim that putting their research in a map, for example, or a moving image helps them see connections, new relationships in data on, say, animal migration patterns that they might miss if they're just looking numbers on a piece of paper.

This increase of food supply was due perhaps half to the increase of cultivated area, particularly by migration and settlement in the central and western provinces, and half to greater productivity - the farmers’ success in raising more crops per unit of land.

Now usually when we talk about birds flying long distances, we're discussing seasonal migration.

But there's some species that fly long distances not as part of a migration but as part of their regular foraging for food.

Petroleum migration is analogous to groundwater migration.

For example, flowering may coincide with the migration of a certain animal species that pollinates the plant, or producing many flowers at once may increase the number of pollinators a plant attracts.

Um ... whether to use Assisted Migration, this debate is mostly within the biology community right now.

Assisted Migration really needs this level of oversight, and soon.

Currently there's no public policy on using assisted migration to help species survive climate change.

In one case, a group of conservationists has already taken it upon itself to try on their own to save an endangered tree, the Florida Torreya tree, through Assisted Migration.

Well, you know, I am writing that paper about whales and the path they travel as they swim through the ocean, their migration patterns.

It’s a little crazy for me to be writing about migration patterns without actually knowing how they stay underwater for so long.

Um... the most radical strategy being debated among conservation biologists is Assisted Migration.

Assisted migration means picking up members of a species, or members of a group of interdependent species and physically moving or translocating them.

Now, migration is a natural survival strategy.

Now, assisted migration could become a viable part of our rescue strategy, but there are a number of uncertainties and risks.

Without more research, we can't predict if Assisted Migration will work for any given species.

And in addition to all that, it is not even clear that assisted migration or any migration for that matter, will help at least for some species.

During periods when commodity prices were high, the rate of westward migration increased spectacularly.

"Old America seemed to be breaking up and moving westward," observed an English visitor in 1817,during the first great wave of migration.

Certain characteristics of American society help to explain this remarkable migration.

Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.

When the planetarium sky matched the sky outside, the birds fluttered in the direction of their normal migration.

It has long been accepted that the Americas were colonized by a migration of peoples from Asia, slowly traveling across a land bridge called Beringia (now the Bering Strait between northeastern Asia and Alaska) during the last Ice Age.

Still, the process is uncertain, and peaceful migration—or simply rapid demographic growth—may have also caused the Bantu explosion.

So when a banded bird is recaptured and reported, we learn about its migration route, its growth, and how long it has been alive, its lifespan.

Now as far as the Sahara goes, there is some recent literature that points to the migration of the monsoon in that area

But to understand more about how to protect and support the humming birds the best we can, we’ve got to learn more about their breeding, nesting sites and migration routes, and also about the natural habitats we find there.