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nest in Biological News

Bee swarms follow high-speed 'streaker' bees to find a new nest

It's one of the hallmarks of spring: a swarm of bees on the move. But how a swarm locates a new nest site when less than 5% of the community know the way remains a mystery. Curious to find out how swarms cooperate and are guided to their new homes, Tom Seeley, a neurobiologist from Cornell Univers...

How birds spot the cuckoo in the nest

It's not always easy spotting the cuckoo in the nest. But if you don't, you pay a high price raising someone else's chick. How hosts distinguish impostor eggs from their own has long puzzled scientists. The problem remained largely unsolved while looking at it through our own eyes. It was only whe...

Disappearing nest egg: Researcher studying declining numbers of macaws

One of the most colorful birds in the world may have a less-than-colorful future. Macaws, the largest members of the parrot family, have seen their numbers decline in recent decades, and that trend is continuing today. Dr. Don Brightsmith, a bird specialist at Texas A&M University's Schubot...

Removing egg from nest may help save endangered whooping crane

Removing an egg from the endangered whooping crane's nest increases the species chances of survival despite governmental concerns about tampering with nature, says a University of Alberta scientist. Dr. Mark Boyce, from the Faculty of Science, studied the policy of removing from Wood Buffalo Nat...

Ants more rational than humans

...ences. The authors' insights arose from an examination of the process of nest selection in the ant, Temnothorax curvispinosus. These ant colonies live in... they should always rank options, whether these are food sources, mates, or nest sites, according to their fitness contribution." "Which means that it wo...

Noise pollution negatively affects woodland bird communities, says CU-Boulder study

...ause of their vocalization pitches, a reduction in nest predators and less competition from other songbird...ate above the "industrial rumble" and subsequently nest there, he said. Common in congested urban areas, h...ted in quiet areas were subject to greater rate of nest predation than those in noisy areas, he said. Wood...

Scientists are learning more about big birds from feathers

... human observation actually had closer to 300. The work also helped researchers understand more about the roosting habits of some eagles that use a nest for months at a time versus others who float around from roost to roost. Another study showed that DNA could be used to distinguish eagle species from...

All in sight

...these challenges. The system, called FIRST Navy, was installed during Polarstern's last port call on a highly stabilized platform in the ship's crow's nest at a height of about 28 metres. The system generates five thermographic all-round images per second with a resolution of 7200 x 563 pixels of about 4 ...

Not 1, but 2 kinds of males found in the invasive round goby

...cies through competition and predation. Researchers at McMaster University discovered evidence that in addition to round goby males which guard the nest from predators and look after their offspring, there exists what scientists call "sneaker" males little males that look like females and sneak into t...

Temporary infidelity may contribute to the stability of ancient relationships

...s in the ants' relationship with the fungus during nest establishment may contribute to the stability of t...d wondered if young queens were given fungi from a nest other than their natal nestwould they treat it as ...sconsin. "Young queens adopt a fungus from another nest and cultivate it in their new nest. This sort of ...

Scientists identify world's largest leatherback turtle population

...s on working with local agencies to coordinate conservation efforts to ensure this population is protected against the threats from illegal fisheries, nest poaching, pollution and habitat disturbance, and climate change." The study also revealed that around 79 percent of the nesting occurs within Natio...

American Chemical Society Weekly PressPac -- April 1, 2009

...zation in these animals. In the study, Marcelo Valle de Sousa and colleagues point out that worker bees begin adult life by performing tasks in the nest such as brood nursing. By 2-3 weeks of age, however, these females equivalent to middle age in human years switch to foraging for nectar and pollen. ...

Food security for leaf-cutting ants: Workers and their fungus garden reject endophyte invaders

...al gardens for ~50 million years. New results from the Smithsonian show that both the ants and their fungal crop actively combat fungi coming into the nest inside leaves, thus ensuring the health of their mutualism. "When you look at a healthy tropical plant, you think you're seeing just one organism, b...

Team approach appears to work best for insect colonies

... However, what looks like a team effort is in fact each animal jostling to get to the middle of the group to evade predators. "By contrast, an ant nest or a beehive can behave as a united organism in its own right. In a beehive, the workers are happy to help the community, even to die, because the que...

Turtles no longer turned into souvenirs

...tions that benefit wildlife and people, especially local communities that rely on tourism." Hawksbills are one of three marine turtle species that nest on beaches in the Dominican Republic. Over the last century, millions have been killed for the tortoiseshell markets of Europe, the United States and ...

Wild bees can be effective pollinators

...s of bees," said Dr. Julianna Tuell. Unlike honey bees, which live together in hives, most of the bees found by the authors were solitary bees that nest in the soil or in wood cavities. While soilnesting bees may be difficult to manage, the authors see potential for cavitynesting bees, such as several ...

Climate change affecting Europe's birds now, say researchers

...ale; wood warbler (B); nutcracker; northern wheatear (B); and lesser spotted woodpecker (B). Of the 122 species included (out of 526 species which nest in Europe), 30 are projected to increase their range; while the remaining 92 species are anticipated to decrease their range. Dr Gregory added: "Th...

Penguins marching into trouble

...e ago due to changing ocean conditions and overfishingparticularly of anchovies, a favorite penguin food. This has forced some penguins to attempt to nest outside of protected areas where they often fall prey to predators. Meanwhile, changing weather patterns have also led to increased instances of heav...

Lincoln Park Zoo awarded $1.5 million grant for new research institute

...estigating the prevalence of raccoon roundworm with the goal of creating management strategies to mitigate risk to humans, as well as a study on avian nest predation with the goal of improving urban habitat for birds. Lincoln Park Zoo's Urban Wildlife Institute will also be enlisting local partners fo...

Male dinosaurs may have been prehistoric babysitters, study shows

...r work appears in the current issue of Science magazine. Moore and the research team examined six nests of well-preserved dinosaur eggs, with each nest containing from 22 to 30 eggs found in Montana and Mongolia. Most of the eggs were about 75 million years old. Numerous clues including the size of...

Dune and dirty: Hurricane teaches lessons through ecosystem research

... are endangered. The sea turtles' nesting season in Texas runs from April through mid-July but nesting peaks during May and June. Females typically nest at the base of dunes or within the dune complex, according to Dr. Andr Landry, AgriLife Research marine ecologist and director of the Sea Turtle and F...

Fountain of Youth to be found in the anthill?

...cally arise as the single reproductive female in an ant colony, living for as long as 30 years in some species. As head of the colony they stay in the nest dedicated to perform one major task, egg-laying, for their whole life. Workers on the other hand perform brood care, colony maintenance, and complex f...

Bumblebees learn the sweet smell of foraging success

...stead, they release a recruitment pheromone in the nest to encourage their colleagues to venture out in se...best when the flower smell was brought back to the nest by another 'demonstrator' bee, but they could also learn it when the anise odour entered the nest as either scented nectar or simply scent in the ai...

156th Acoustical Society of America Meeting, Nov. 10-14, 2008 in Miami

...IPER WOODLANDS "Anthropogenic noise appears not only to influence avian nesting patterns, thereby altering the avian community, but also to influence nest success through changes to predation patterns..." http://asa.aip.org/web2/asa/abstracts/search.nov08/asa22.html . EXPRESSION OF EMOTIONS IN ENGLI...

In a last 'stronghold' for endangered chimpanzees, survey finds drastic decline

...vey, revealing a 90 percent drop in the chimpanzee nest encounter rate since the time of the last survey. ...bell said. "It was saddening that I only found one nest in this park, as during the previous survey they found 234 nests along the same transects. The one nest I did find was also in an area that had just been ...

Australian frog species chooses not to put eggs in 1 basket

...vailable eggs between the nests of more males, as opposed to leaving them in one nest, had elevated offspring survival, presumably by insuring against nest failure. "Traditionally it was thought that males, but not females, should benefit from promiscuous behaviour because males generally invest less i...

No helicopter moms among Rutgers mutant mice

...trated that these mutant mice were slow to retrieve pups placed outside the nest at corners of the cage. Females with normally active stathmin, however, wer...eminded" mice of their parental responsibility by first putting pups in the nest for five minutes before dispersing them. In this case, the mutant mouse ret...

Scavenger birds chew the fat

...wed or carried. Bearded vultures are one of the few species of vulture who do not feed their young by regurgitation but transport prey remains to the nest in their feet and bills. Margalida chose to study bearded vultures living in the mountains of the Pyrenees in Spain. It is a harsh environment an...

Ancient mother spawns new insight on reptile reproduction

...million-year-old fossil of a pregnant turtle and a nest of fossilized eggs that were discovered in the bad... eggs was found in 1999 by Tyrrell staff while the nest of eggs was discovered in 2005 by U of C scientist...lead author of the article and an expert on fossil nest sites, and her field assistant. Both were found ab...

Genes and nutrition influence caste in unusual species of harvester ant

... were more likely to become major or minor workers. A recent study of honey bees found that colonies with a lot of genetic diversity were better at nest building and finding and storing food than their less diverse counterparts. It was long assumed that castes are environmentally determined, but rec...

Blood pressure response to daily stress provides clues for better hypertension treatment

...t diet makes things worse by increasing oxidative stress. Wildlife biologists have found naturally occurring models. Rat pups whose mother builds a nest far from a food source and so must be gone foraging several hours each day, are more anxious. Neurobiologists have shown animals separated from their ...

Smells like bees' spirit

...ersity of London. When bumblebees return to the nest from a successful foraging mission, they produce a pheromone which encourages their nest mates to also go out and find food. Scientists had...e likely to respond to the pheromone and leave the nest in search of food, if the colony has little or no ...

For the birds or for me? Why do conservationists really help wildlife?

...ment operations," Hvenegaard said. This applies especially to purple martins, a member of the swallow family that is almost completely dependent on nest boxes and subsequent management provided by volunteers. The study, which will be presented this fall at the Conference on Integrating Human Dimen...

Spanish researchers discover significant leatherback turtle nesting beaches in the Caribbean

...ted at remaining beaches along the exploration route, where the team detected severe disturbances that impair turtle nesting including grave cases of nest raiding and could jeopardize the future of this leatherback population. ...

A bee's future as queen or worker may rest with parasitic fly

...searchers found that smaller bees that emerge in a nest are dominated by their mothers. These small bees a...bers, that also house flies are smaller than their nest mates from fly-free cells. The flies may encourag...s of night-blooming plants and the female bees can nest alone or live in small colonies. A colony is typi...

When fish talk, scientists listen

...sn't need good looks to attract a mate just a nice voice. After building a nest for his potential partner, he calls to nearby females by contracting his sw...d. Female midshipman find it very alluring, and they only approach a male's nest if he makes this call. In a paper published this week in Science , thr...

Leatherback turtles' newly discovered migration route may be roadmap to salvation

...ing out where conservationists might be able to intervene on their behalf is hugely challenging. But a major effort to tag and track leatherbacks that nest on the Pacific coast of Costa Rica has yielded unprecedented insight into their behavior. While most sea turtles, including other populations of leath...

Wasps and bumble bees heat up, fly faster with protein-rich food

...re very sensitive to hot spots in the colony." Bumble bees, but not wasps, will recruit other foragers to help exploit a valuable find; bees in the nest may judge the temperature of returning foragers, which they jostle, perhaps to determine whether they should seek the same source of pollen. "It ma...

High hormone levels in seabird chicks prepare them to kill their siblings

...ca booby hatchlings unconditionally attacks and ejects the younger from the nest within days of hatching," Anderson said. Because Nazca boobies have diffic...ch, raising their aggression hormones even higher when they actually have a nest mate. The nestlings that fight siblings become bigger bullies as adults th...

Project succeeding to relocate Caspian terns

... "It is amazing that more than 520 Caspian terns have found the new island, which was only constructed five months ago and that some have decided to nest there," said Dan Roby, an OSU professor of fisheries and wildlife and principal investigator in the study. "There is a history of nesting at Crump Lak...
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