Tag: "nest" at biology news
Prescribed burning may threaten ground nesting birds
... and saplings that the birds depend on. Ovenbirds nest
on the ground and use leaf litter to build and conceal their nests. Worm-eating warblers nest
on the ground in high moisture areas, and the burns presumably dried them out and made them less sui...
Invasive gobies prevent sculpin spawning, impacting perch food chain
...nd gobies were added to successful mottled sculpin nest
areas, they ate the sculpin egg masses, changed to...lpin spawning. "Both fish are bottom-dwellers that nest
in rock cavities, but round gobies prefer sites with larger rocks and more surface area because unli...
Biting may drive division of labor among social wasp workers
...es its fellow workers, prompting them to leave the nest
and forage for the colony. Sean O'Donnell, a U...rease, the likelihood of an individual leaving the nest
to forage increases." His observations show that an individual wasp's life cycle tends to follo...
Nile crocodiles threatened by alien weed
...eed cause some nesting crocodiles to abandon their nest
sites, while shade from the plant alters the tempe...crocodiles is determined by the temperature of the nest
while they are still in the egg, so that the sex ratio of hatchlings can be skewed by nest
Pet trade wrong: Poaching major threat to parrots
...olleagues determined the birds' death rates due to nest
poaching. The overall poaching rate was 30% and fo...in the Neotropics, via a combination of protecting nest
sites and enforcing existing domestic bans on parrot trade....
Sex lives of wild fish: Genetic techniques provide new insights
...tends the nest. "They try to build an attractive nest
to entice females to come and spawn with them," De...all of her eggs in a nest, the male swims over the nest
and fertilizes the eggs. The female leaves often to find another male to spawn with while the guar...
Extinction claims a furry friend
...acular ancient trees had many hollows suitable for nest
sites, and a wide, open, understorey," said Dr Hornsby. "Felling themhas created instead a woodland of younger trees, many of which are coppice regrowth around the base of the older trees. This replacementwoodland conspicuously lacks nesting-hollows...
Cold water off Brazil might be causing Argentine penguin nest failures
...nt food supply could be a major culprit in penguin nest
failures now occurring in Argentina. It is not unu... penguins are as much as 400 miles away from their nest
site at a time when they should return to provide food for newly hatched chicks. Instead, Boersma sa...
University of Georgia geneticist among the first to study genetic mating systems of fishes and turtles
...presence of eggs - even those stolen from a nearby nest
- prompt a male's mates to lay additional eggs tha...plenty to study, including the strange behavior of nest
kidnappers. These males, it turns out, are tending nests in which they have sired none of the young,...
Fragmented Forest, Fragmented Food
... hatched. Occasionally, the female will leave the nest
to search for her own food. She usually also help...to make at least one foraging trip away from their nest
than their counterparts in the larger fragments. Females in the larger fragments also bred for an av...
Blister beetles use sex and subterfuge to infiltrate bee's nests
... produce a beetle instead. Bee eggs already in the nest
cell are likely eaten by the larvae as well. "Whi...triungulin aggregations-first reported in 1895-and nest
finding. Aggressive mimicry is not new, but has only been associated with individuals of a species...
The power of the mother-child bond
...trieves a baby rat that has wandered away from the nest
-- is inhibited by alcohol. Another effect of alcohol on the mother is a decrease in body temperature; it may be a drop of only one and a half degrees centigrade, but the pups may detect the difference in warmth." "The animal model and the human l...
Jays and cars don't mix
...an do more harm than good. Florida scrub-jays that nest
along a highway die in greater numbers than they r...reaching independence--transition between being in nest
and living independently--fly well and are very mobile. Florida scrub-jays do not avoid roadside ha...
New Science study revisits the debate over bird parents, predators, and family planning
... families. After all, bird parents who fly off the nest
to find food risk attracting the attention of hungry predators, from squirrels and chipmunks to other birds, explains Martin, a research scientist with the U.S. Geological Survey's Biological Resources Division and a professor at the University of Mo...
USGS finds elevated levels of organochlorine pesticides in Aleutian bald eagles
...igher. The number of bald eagles produced per nest
on Adak, Tanaga and Amchitka was comparable t... in the fat layers of migratory seabirds that nest
at the Aleutians by the tens of millions. Birds of prey, such as bald eagles, peregrine f...
Presence of a fertile female in the next nest can lead a bird astray, UB
...ever, the mere presence of a fertile female in the nest
next door can beenough to cause a male to stray, l...hat themale also will find extra-pair young in his nest
when he returns. An alternative explanation being tested by Webster and his colleagues is thatbreedi...
Threatened marbled murrelet first to be hatched in captivity
...the evening and that sameevening it flies from its nest
to the coast. "Once they've reached fledging success they must have a prettygood survival rate. We've been following some young birds in previous years andwe know they travel considerable distances. We see them feeding, so they've got...
A first: Endangered puaiohi birds fledge four chicks in the wild
... While many songbirds initiate more than one nest
during a single breeding season, Foster says ...least one of the females was building her new nest
even before the young had fledged out of her first nest," he said. In another case, a single ...
Home owners may sleep better because student overcame her fear of insects
...anding the process is how food isdistributed among nest
members. Low level radioactivity was used to trace...y live in the trees and in the house, with themain nest
often in a tree. "The ants take the food home to the wife and kids and they expire," says Trower."Th...
First Great American Bluebird Count
...he continent about cavity-nesting birds(birds that nest
in natural holes in trees and in constructed nest
boxes) suchas chickadees, swallows, and bluebirds. The site features maps for eachspecies, regularl...
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