Tag: "nests" at biology news
Overfishing may drive endangered seabird to rely upon lower quality food
...eabirds were nesting, and for those that did, many nests
failed for a variety of reasons." The researchers analyzed marbled murrelet feathers from 136 birds collected in the Monterey Bay region between 1895 and 1911. The historic feathers represent a time period prior to the onset of intensive fishing, dec...
Removing egg from nest may help save endangered whooping crane
...tion. The last remaining whooping crane population nests
in Wood Buffalo National Park and winters at the Aransas National Wildlife Refuge in Texas. At one point the bird's numbers reached a low of 16 in 1942 but the population has since increased to more than 200 birds. Not only has the Wood Buffalo-Aran...
Protein involved in 'mad cow' disease
...urones without PrPC and surrounded by perineuronal nests
breaks with the hypothesis, to date, that the disappearance of such nests
a special form of extracellular matrix is a primary event in the course of spongiform encephalopat...
Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds
... show that the ant, Myrmelachista schumanni, which nests
in D. hirsuta stems, creates devil's gardens by poisoning all plants except its hosts with formic acid. By killing other plants, M. schumanni provides its colonies with abundant nest sites--a long-lasting benefit, as colonies can live for 800 years."...
Ants win a waxy race
...ippery waxy plant surfaces in order to reach their nests
and food supplies. Some Macaranga trees in South East Asia have waxy stems to protect themselves from ants and other insects. Only one specific ant is capable of running up and down the stem, in order to access its nest and food supply inside the ste...
Mayan stingless bee keeping: Going, going, gone?
...as, Mayan bee keepers harvested honey from the log nests
of stingless bees native to tropical forests. Now, colleagues from the Colegio de la Frontera Sur in Quintana Roo, Mexico and the Smithsonian Tropical Research Institute (STRI) warn of the imminent demise of stingless bee keeping on the Yucatan a ...
Can our genes tell the story of our divergence?
..., and developed the skills to construct tree-bound nests
high above the forest floor. We differ by just a tad over 1% at the DNA sequence level, yet scientists predict that both species should harbor genetic footprints of our divergence the subject of a recent study in the premier open-access journal PLo...
Highlights from the April issue of Ecology
...owbirds, birds that like cuckoos lay eggs in the nests
of other birds, reduce the number of offspring fro...ence of cowbird chicks increase competition in the nests
of Song Sparrows, with the sparrow's female chicks loosing out. Shifts in open-ocean fish communiti...
In the mating game, male wild turkeys benefit even when they don't get the girl
... young, scavenged broken egg shells from abandoned nests
or lifted eggs from unattended nests
to obtain the DNA of offspring. His study included 126 adult turkeys - 51 males and 75 females - and...
Unusual reproductive behavior of odd ants surprises scientists
...States, with ranges covering hundreds of miles and nests
so large they're visible from airplanes. "This is the ant that runs the west it's everywhere," Rissing said. The researchers had noticed that in certain areas mainly southeastern Arizona and New Mexico some of the male harvester ants looked differ...
Tracking orangutans from the sky
...t directly, so researchers traditionally count the nests
they sleep in at night, which is time-consuming, especially when faced with the hip-deep muck and steep slopes of the rainforest floor. Instead, Ancrenaz and colleagues have developed a survey method by which estimates of orangutan numbers can be mad...
A puzzle posed by black-headed ducks yields to persistent biologists
...ll "obligate brood parasites"--instead of building nests
and raising their own young, they lay their eggs in the nests
of other species and let those birds do the hard work of parenting for them. The black-headed duck o...
New insights into chimpanzees, tools, and termites from the Congo basin
...y was used to study chimpanzee behavior at termite nests
in the Goualougo Triangle, Republic of Congo. From.... Chimpanzees regularly visit two forms of termite nests
and used specific tool sets to extract their insect prey depending on the structure of the nest. The...