birds是什么意思？

As a result, the museum plans to expand the hall, as well as add to its ancient birds collection.

During deep sleep, the participants' brains behaved in a similar manner seen in birds and dolphins.

During deep sleep,the participants' brains behaved in a similar manner seen in birds and dolphins.

He hopes now to train more birds.

He says that rooks, the chosen birds, are considered to be particularly intelligent.

However, some parents are concerned that it encourages their children to drop litter so they can watch the birds to pick it up.

pigeons are often seen as dirty birds and an urban nuisance but they are just the latest in a long line of animals that have been found to have abilities to help humans.

She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators.

six birds have just been trained to pick up rubbish at a French historical theme park.

So far, visitors to the theme park have been excited to see the birds in action.

Some birds fly in groups for safety, while others fly alone.

Some birds migrate by flying to a warmer place for the winter, where they can find more food.

Some of those small mammals help to sustain such big birds as golden eagles.

The birds will be encouraged to clean the park through the use of a small box that delivers a small amount of bird food.

He captures birds only to let them go when he realizes the cruelty involved.

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.

birds flock together, fish school together, cattle herd together...just perceiving norms is enough to cause people to adjust their behaviour in the direction of the crowd.

In the short-term, the birds seem to benefit from overwintering on rubbish dumps.

Landfill sites on the Iberian Peninsula have long attracted local white storks, but all of the Spanish birds tagged in the study flew across the Sahara Desert to the western Sahel.

Many birds like to store food for the winter, which they subsequently retrieve.

migrating birds affect ecosystems both at home and at their winter destinations, and disrupting the traditional routes could have unexpected side effects.

Once every three or four years, when conditions are right, the lake is covered with the pink birds as they stop flight to breed.

"The birds can easily eat pieces of plastic or rubber hands and they can die, " said Flack.

They have led some birds to give up on migration.

Three-quarters of the world's flamingos fly over from other salt lakes in the Rift Valley and nest on salt-crystal islands that appear when the water is at a specific level一too high and the birds can't build their nests, too low and predators can move bri

When that happens, many trees like walnuts, oaks and pines, rely 30 exclusively on so-called "scatter-hoarders, " such as birds, to move their seeds to new localities.

When the birds forget to retrieve their food—and they do sometimes—a seedling has a chance to grow.

When the water hits the right level, the baby birds are kept safe from predators by a corrosive ditch.

While many birds travelled along well-known routes to warmer climates, others stopped short and spent the winter on landfills, feeding on food waste, and the multitudes of insects that thrive on the dumps.

Writing in the journal, the scientists describe how the storks from Germany were clearly affected by the presence of waste sites, with four out of six birds that survived for at least five months overwintering on rubbish dumps in northern Morocco, instead