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Tag: "forage" at biology news

Bats prey on nocturnally migrating songbirds

...ly, owls, as typical night-active predators, never forage in the open space: moving prey is detected from substrates through passive-listening of rustling noises. The unique ecological niche of the giant noctule may in turn explain some of its peculiar natural history traits. First, the species occurs ...

New evidence of 'human' culture among primates

...populations use stones as tools to dig holes or to forage and questions remain about why this happens in this area. Because it is quite dry and barren, it is possible they learn these skills from one another because they have to develop them quickly. To be sure we would need to research more." As well as...

'Empty nester' parent birds use recruitment calls to extend offspring care

...re ends when the young leave the nest and begin to forage for themselves. In many species, however, parents and young continue to associate with one another beyond this point of nutritional independence. Because juveniles are poor foragers, they might benefit from staying close to experienced adults, who ca...

Researchers find that bumblebees' flower choice matters

...s they gather pollen ?which plant species the bees forage on, which flowers they probe and in what order, and how many blooms they visit before moving on to another plant. In doing so, the bees make plant reproduction possible by dispersing pollen. But why go to such lengths to map the flight of the bumbl...

Wasps queue for top job

... is costly. It involves energy-expensive flight to forage for food, and leaving the nest is dangerous. We ha...to take risks by leaving the safety of its nest to forage for food." The defining feature of eusocial animals - including insects like bees, ants and wasps,...

Pollen proves beneficial for northern lakes

...bility of plankton, an important food resource for forage fish, the production of harvestable sport fish may also rise, all thanks to pollen. Since climate also affects annual pollen production predicted climate change scenarios could affect the productivity of northern lakes by altering the magnitude and...

How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles

...thought that hatchlings left the coastal region to forage far out at sea before returning, later in life, to...that animals of this size would have moved back to forage in coastal zones. This means there are much greater numbers of the breeding population out at sea an...

Widespread elephant slaughter discovered in Chad

..., when the elephants wander outside park limits to forage and are vulnerable to attack. Elephants in the park have enjoyed strong protection from the Chadian government and the EU, but the large percentage that leaves the park during the wet season has not been as well protected. All hunting of elephants i...

Vegetables inhibit growth of prostate cancer in mice with human tumors

...between two closely related albatross species that forage in different areas of the North Pacific. Researche...who led the study. "The black-footed albatrosses forage mostly in the California Current, whereas the Laysan albatrosses forage at higher latitudes near Ala...

Albatross study shows regional differences in ocean contamination

...between two closely related albatross species that forage in different areas of the North Pacific. Researche...who led the study. "The black-footed albatrosses forage mostly in the California Current, whereas the Laysan albatrosses forage at higher latitudes near Ala...

ASU researchers find link between social behavior, maternal traits in bees

...ore common in the strain of bees that preferred to forage for pollen (identified by Amdam as the high pollen... team recorded what the bees brought back from the forage and measured their ovaries. Results from the experiment validated her hypothesis, showing that pol...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...ls and albatrosses. These species, which typically forage across a broad area of the North Pacific Ocean, sh...are specialized for feeding on Antarctic krill and forage along the continental shelf of Antarctica at the edge of the ice pack. Southern elephant seals, in...

Taking a bite out of a fellow worker helps wasps recruit new foragers

... communicate that it is time to leave the nest and forage for the colony, according to research by a University of Washington animal behaviorist. Biting is a way that workers in a colony of the social wasp Polybia occidentalis recruit new foragers to gather water, food and building material in a time of ne...

Lactose intolerance linked to ancestral environment

...said. Their nomadism enabled them to find suitable forage for their cattle and to avoid extreme temperatures. "Also, the fact that these groups maintained small herds and kept them moving probably reduced the pathogen transmission rate." According to the National Digestive Diseases Information Clearinghous...

A vaccine to kill tapeworm

... field trials in which the pigs will be allowed to forage as normal, they reported at a conference on parasitology in Melbourne last week. At the moment, two vaccinations about one month apart provide several months of immunity. The team's aim is to provide lifelong immunity with one or two shots, though th...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...opulations, low stocking rates, and large areas to forage on. The conversion of rangelands to croplands reduced the available pasture and the collection of firewood by many, not necessarily just the pastoralists, reduced range quality. The lesson is that increasing population pressure not accompanied by man...

Wild grasses and man-made wheats advance research capabilities

...rchers, he said. "We want to look at them for the forage characteristics they may offer, which have not been evaluated," Rudd said. "They have been shown to have large, strong seed for rapid stand establishment and early growth in the fall." These synthetic spring wheat varieties must be backcrossed to ma...

Grass makes environmentally friendly biofuel

...riendly and sustainable, says a Cornell University forage crop expert. This alternative fuel easily could be produced and pelleted by farmers and burned in modified stoves built to burn wood pellets or corn, says Jerry Cherney, the E.V. Baker Professor of Agriculture. Burning grass pellets hasn't caught on...

Falling ants glide back to trunk to avoid dangers of forest floor

...definite advantage for ants, like Cephalotes, that forage at the outer reaches of branches and are in greatest danger of being knocked off by wind gusts or passing monkeys. There is some evidence, Dudley said, that these ants sometimes purposely drop off the tree to avoid predators, evidently secure in the ...

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