• Natural cavities in dead or dying eucalyptus trees are a particularly popular choice for nesting cockatiels. (birdfact.com)
  • Cockatiels enter the nest cavities tail-first. (birdfact.com)
  • Nuthatches make their nests in natural cavities, such as a broken limb or tree trunk or perhaps an old woodpecker hole. (bwdmagazine.com)
  • Bird species that use tree cavities for nesting can be classified as i) excavators, or primary cavity nesters, and ii) non-excavators, or secondary cavity nesters. (scielo.br)
  • Prefers open country with raised perches and access to nesting cavities. (sdakotabirds.com)
  • A university study into the incubation behavior of modern birds is shedding new light on the type of parental care carried out by their long extinct ancestors. (scienceblog.com)
  • By Labor Day most of the Ospreys we see hanging around nest sites are confused young birds that are trying to figure out what to do next. (birdwatchersgeneralstore.com)
  • I mean if you were going to lie about something, you'd likely save it for the IRS, not birds building a nest. (birdwatchersgeneralstore.com)
  • Ospreys don't breed until they are three or four years old, although sometimes younger birds will pair-up and even do some premature nest building, but don't actually lay any eggs. (birdwatchersgeneralstore.com)
  • Cockatiels are nomadic birds, moving to wherever the food sources are most abundant, and a nest site needs to be located within easy reach of plentiful supplies of grain and freshwater while young are being raised. (birdfact.com)
  • The nest tunnel is very narrow, and the birds' bodies press so tightly against the tunnel walls that when the birds enter and exit their movement acts like a piston, pumping in fresh air and pushing out stale air. (earthlife.net)
  • Rainbow bee-eaters have also been known to share their nest tunnels with other bee-eaters and sometimes even other species of birds. (earthlife.net)
  • Young from the previous year or other birds connected to the parents are often nest helpers. (birdsology.com)
  • Based on nest characteristics described in the literature, we inferred if hollows present in secondary sites could harbor the large secondary-nester Atlantic Forest birds, with special attention to toucans and hawks. (scielo.br)
  • Nest webs: A community-wide approach to the management and conservation of cavity-nesting forest birds. (scielo.br)
  • engage in behaviors reminiscent of birds tending to their young. (colorado.edu)
  • Birds nest outside my window every spring. (colorado.edu)
  • Baby birds all must leave the nest. (hubpages.com)
  • Exposure and toxicity of environmental mercury to birds can be enhanced or lessened due to the available sources and forms of mercury and other species dependent factors such as life stage, migratory patterns, foraging and nesting behaviors, transfer of mercury from mothers to eggs, and sex. (usgs.gov)
  • Mercury effects on birds often are sublethal and can include changes in behaviors. (usgs.gov)
  • They were one of the last North American birds to have their nesting location discovered, when nesting Harris's Sparrows were finally seen in the stunted scrubby spruces near the treeline in northern Canada in 1931. (sdakotabirds.com)
  • Despite the urban setting, these birds are still able to find suitable nesting locations and thrive in these areas. (articleinsider.com)
  • Renowned for their assertive and territorial behavior, Couch's Kingbirds are known to fearlessly defend their nesting sites against potential threats, including larger birds of prey. (articleinsider.com)
  • Community organizing refers to the unit of analysis and action, shifting the focus from individuals to systems, rules, social norms, or laws to affect health behaviors and outcomes (2). (cdc.gov)
  • According to the Health Belief Model, perceptions of susceptibility to and severity of a health problem (which together comprise the construct of "perceived threat") are factors in predicting health behaviors (8). (cdc.gov)
  • detection and survival may be related to differences in health behaviors. (who.int)
  • However, by taking into account factors known to affect egg and clutch mass in living bird species, the authors found that shared incubation with mature young was the ancestral incubation behavior rather than male-only incubation, which had been claimed previously for these Theropod dinosaurs. (scienceblog.com)
  • The group decided to repeat the Science study with a larger data set and a better understanding of bird biology because other palaeontologists were starting to use the original results to predict the incubation behavior of other dinosaur species. (scienceblog.com)
  • In marine protected areas (MPAs), fish feeding may cause changes in the behavior, and thus the density and distribution, of coastal fish species. (rac-spa.org)
  • We evaluated spatial variability in human-positive fish behavior around the Ustica Island MPA (Italy) and the potential indirect effects of behavioral change on other species. (rac-spa.org)
  • Two mensurative experiments demonstrated that ca. 1/3 of the species present in fish-feeding areas exhibited human-positive behavior, losing instinctive fear in the presence of humans and encircling people in the water even when food was not provided. (rac-spa.org)
  • Damselfishes were negatively affected by the unnatural aggregation of a labrid species, as these aggregations frequently attacked and destroyed the benthic nests of the damselfish. (rac-spa.org)
  • German's Swiftlet ( Aerodramus germani ), with two subspecies germani and amechanus , was formerly considered to be conspecific with the Edible-nest Swiftlet, but is now often considered to be a separate species. (earthlife.net)
  • Like the majority of parrot species, cockatiels are cavity nesters, using natural tree hollows or purpose-built cockatiel nest boxes to raise their young. (birdfact.com)
  • In order to control the environment within the nest, the nest construction is extremely important for many species. (adventurepublications.net)
  • The majority of crow species are not very picky about where they build their nests, although large, densely forested trees with wide branches and sturdy tree forks are their preferred environment. (birdsology.com)
  • Crows' nests have been shown in studies to be strong, last for many years, and even be utilized by other species after the crows have left (though they often collapse in the winter). (birdsology.com)
  • Crows are one of the few bird species that have 'nest helpers,' in reality. (birdsology.com)
  • The terrier had a keen nose for turtles, identifying 560 sea turtle nests from three species. (nationalgeographic.com)
  • Here, I provide several records of cavity nesting by Great Kiskadees( Pitangus ulphuratusI) .t hen discuss nest location (exposed vs. concealed) and nest structure (cup-shapedv s. domed) of Tyrannusre latives( 12 genera and ca. 33 species)a s they relate to the systematics of the group, and suggest that cavity nesting is a primitive trait in certain branches of the Tyrannidae. (planetofbirds.com)
  • American Kestrels will use nest boxes designed for the species. (sdakotabirds.com)
  • The Couch's Kingbird's distinctive calls are an important part of their overall behavior and contribute to their success as a species. (articleinsider.com)
  • Species of solitary wasps and bees may re-utilize holes of old nests of Hymenoptera as well as cells made of vegetable fibers or mud in abandoned nests, and adjust them to their own offsprings. (bvsalud.org)
  • If you want to make the nested technique apply to a header that you've already built (using the Menu Module), you can skip this step and go to the tutorial's last part. (elegantthemes.com)
  • Allan W. Hook "Nesting Behavior of Chlorion cyaneum (Hymenoptera: Sphecidae), a Predator of Cockroaches (Blattaria: Polyphagidae)," Journal of the Kansas Entomological Society 77(4), 558-564, (1 October 2004). (bioone.org)
  • Nests of the solitary bee Tetrapedia diversipes have been found in holes in wood, trap nests and their nests may be associated to cells of old nests of others Hymenoptera. (bvsalud.org)
  • The male will bring the female insects while she digs the burrow that will be their nest. (earthlife.net)
  • Two adults attended the nest, bringing small insects to the nestlings and removing fecal sacs. (scielo.br)
  • Understanding their behaviors and dietary choices will help homeowners address concerns about these fascinating insects. (whatsthatbug.com)
  • From the southernmost regions of Texas and Arizona in the United States, all the way down to Costa Rica and Panama, the Couch's Kingbird flourishes in warm climates with an abundance of insects and suitable nesting locations. (articleinsider.com)
  • Female nest attendance was near 82% during the incubation stage and decreased to 21% as nestlings aged. (usgs.gov)
  • Mean length of nest recesses increased from 4.5 min during the incubation stage to over 45 min during the late nestling stage. (usgs.gov)
  • This is a guide to Emu nesting, including incubation, eggs and nest construction. (birdfact.com)
  • Incubation takes an arduous 50 to 60 days, and the male won't leave the nest to feed, drink or defecate in this time - he can lose up to a third of his own body weight! (birdfact.com)
  • For example, mercury exposure can lead to sublethal toxicological effects that can influence parental nesting behaviors involved in egg incubation. (usgs.gov)
  • Photograph showing tree swallow nest with temperature data logger used to measure parental incubation periods. (usgs.gov)
  • For example, the team determined that parental nesting behaviors involved in egg incubation, which plays a significant role in embryonic development, were altered in a population of tree swallows highly exposed to methylmercury but not in Forster's terns ( Sterna forsteri ). (usgs.gov)
  • Wasps maintained both outer and inner nest closures when hunting. (bioone.org)
  • Little is known about the nesting activities of some lineages of megachiline bees. (pensoft.net)
  • Though their behavior may suggest otherwise, carpenter bees do not eat wood. (whatsthatbug.com)
  • Female bees bore into wood to create nesting sites, where they establish individual brood chambers . (whatsthatbug.com)
  • Male bees guard the nest area, although they cannot sting. (whatsthatbug.com)
  • The eggs hatch, and the larvae develop into adult bees, forming a new generation within the same nesting site. (whatsthatbug.com)
  • Carpenter bees may exhibit similar appearance and behavior to bumblebees, but their nesting sites and life cycles differ. (whatsthatbug.com)
  • Advantage to the helpers, who may be protected from predation, or gain skills that they will need when they subsequently reproduce, as a result of staying in the parental nest. (wikipedia.org)
  • This simple and efficient nesting strategy involves smaller effort, time and risk of predation to reutilizer female. (bvsalud.org)
  • Nest attentiveness drives nest predation in arctic sandpipers. (lu.se)
  • Helpers at the nest is a term used in behavioural ecology and evolutionary biology to describe a social structure in which juveniles and sexually mature adolescents of either one or both sexes remain in association with their parents and help them raise subsequent broods or litters, instead of dispersing and beginning to reproduce themselves. (wikipedia.org)
  • The chicks left the nest in September, 2017. (bvsalud.org)
  • Collective animal behaviour is a form of social behavior involving the coordinated behavior of large groups of similar animals as well as emergent properties of these groups. (wikipedia.org)
  • I am a biologist and I study the biology of social behavior and what humans call "love. (medscape.com)
  • I was studying pair-bonding and social behavior in animals, and as my research evolved, I discovered and realized that there had to be a physiology for love-a biology for love. (medscape.com)
  • We began to study the neurology, biology, social behavior, and evolution of these processes. (medscape.com)
  • Characterization of parental behavior by video had similarities to but also key differences from findings taken from blind observations. (usgs.gov)
  • To learn more about typical nest location choices and parental roles in raising young, then please do read on. (birdfact.com)
  • The objective of this study was to explore relationships between parental perceptions of skin cancer threat, sun protection behaviors, physical activity, and body mass index (BMI) in children. (cdc.gov)
  • Suburban landscapes are incredibly beneficial to robins, since their ornamental plantings and grassy lawns provide an abundance of feeding and nesting habitat. (massaudubon.org)
  • In their Canadian breeding habitat, the nest is a cup built of twigs, mosses, and lichens, usually placed on the ground under vegetative cover. (sdakotabirds.com)
  • We also provide evidences that the largest cavity nesters, such as the biggest hawks, might have limited nesting possibilities in mid-successional stage areas especially due to small cavity entrances, which may have important reflects in conservation strategies. (scielo.br)
  • Our results of nesting habits concur with those from other western gorilla studies, in which rainfall influences arboreal nesting. (cifor.org)
  • Keep reading to learn more about cockatiels' nesting habits and preferences. (birdfact.com)
  • The holes they create in wood serve as nests for their young, which is the primary reason for their wood-boring habits. (whatsthatbug.com)
  • But unlike songbirds, which typically leave the nest forever the minute they can fly, young Ospreys are homebodies. (birdwatchersgeneralstore.com)
  • Crows of both sexes typically construct the nest jointly, although sometimes the male may bring sticks to the nest for the female to assemble and integrate. (birdsology.com)
  • They typically forage high in the canopy, and while nests are somewhat closer to the ground, they typically stay at mid- or higher-levels of the canopy at most times. (sdakotabirds.com)
  • Both parents likely incubate the eggs and held to raise the young, but given the height of Hermit Warbler nests and the dense forests they inhabit, breeding and nesting details are currently poorly understood. (sdakotabirds.com)
  • Marianne Heberlein of the Department of Evolutionary Biology and Experimental Studies at the University of Zürich noticed an odd behavior in her dogs: One would try to distract the other, then steal its bed. (nationalgeographic.com)
  • Some nests are more carefully designed as a circle, or small mound, with the eggs in a central depression, whereas others look like a messy pile of twigs and grasses. (birdfact.com)
  • The nest of a Hermit Warbler is a deep cup built of moss, stems of herbaceous vegetation, lichen, conifer needles, and twigs, and lined with softer material such as feathers or plant down. (sdakotabirds.com)
  • If the aim of a reserve is only to promote awareness of marine life and the benefits of conservation to the public, activities such as fish feeding may be regarded as desirable, since the human-positive behavior brought about by this activity guarantees a visual spectacle for visitors. (rac-spa.org)
  • Rarely, nests may be found in the crevices of natural cliffs or boulders, in stone walls, and even on the ground. (massaudubon.org)
  • Some males put greater effort into their nests than others. (birdfact.com)
  • therefore other subpopulations may demonstrate different nesting characteristics. (cifor.org)
  • Overall, the Couch's Kingbird is a fascinating bird with unique characteristics and behaviors that make it a delight to observe in the wild. (articleinsider.com)
  • We quantified nesting behavior of Palila (Loxiodes bailleui), an endangered Hawaiian honeycreeper, by recording at nests during three breeding seasons using a black-and-white video camera connected to a Videocassette recorder. (usgs.gov)
  • In the wild, breeding for cockatiels is triggered by the arrival of the rainy season, with the wet weather prompting cockatiel pairs to begin nesting, as it signals the wider availability of grains and seeds in the weeks ahead. (birdfact.com)
  • They do not form loyal associations to a nesting territory and once the breeding season is over, they will quickly move on, often as part of a larger flock in search of another food supply. (birdfact.com)
  • Nesting sites in tall trees that are in or near to water, and within easy reach of feeding grounds, are preferred, so if these are present in a backyard, then they may offer a suitable spot for breeding cockatiels to raise their young. (birdfact.com)
  • Emus return to the same breeding grounds most years, but there's no evidence that they return to the same nesting site each year. (birdfact.com)
  • Other crows who are not breeding may sometimes come in to assist in constructing the nest, known as nest helpers. (birdsology.com)
  • Return rates of nest box breeding Pied Flycatchers Ficedula hypoleuca to their breeding site in subalpine birch forest in Swedish Lapland, during 1965-2018. (lu.se)
  • Cockatiels nesting follows the annual rainy season, as this is when food supplies are at their most naturally available. (birdfact.com)
  • Objective: This study examined associations between children's behaviors and their exposures to high-risk agricultural work environments. (cdc.gov)
  • Sloths and silky anteaters often visit Cecropia trees and their sharp toenails sometimes pierce the wood, so the researchers speculate that these occurrences, which are far more common and ancient threats to the Cecropia than teenagers shooting clay balls at them, could have led Azteca alfari ants to evolve the observed repair behavior when their host plant is damaged. (pensoft.net)
  • Robins occasionally nest on porches, sheltered windowsills, and the eaves of buildings, and artificial nesting shelves are sometimes accepted. (massaudubon.org)
  • These nests can be found in structures like decks, porches, and eaves. (whatsthatbug.com)
  • When nesting, geese are particularly vulnerable to predators, and they want to minimize the risk of being killed. (birdsandwetlands.com)
  • The nest has several functions, including increasing litter survival, regulation of body temperature, protection from predators or aggressive cagemates, shelter from cold or draft, and in laboratory conditions is a form of environmental enrichment. (mousebehavior.org)
  • For instance, the Cape Crow of Africa constructs nests in Sudan from December to February, Eritrea and Ethiopia from February to May, and Kenya from March to April. (birdsology.com)
  • The female nuthatch usually constructs the nest, but on several occasions, I observed both the male and female bring nesting material to the cavity. (bwdmagazine.com)
  • Cockatiel nests are commonly established in a cavity in the trunk of a waterside tree, which is then lined with wood dust. (birdfact.com)
  • Nests are commonly built in trees and shrubs, reportedly as high as 70 feet but usually 10-25 feet. (massaudubon.org)
  • The early storm toppled several area Osprey platforms and when the platforms went down so did the nests along with the chicks inside. (birdwatchersgeneralstore.com)
  • Helpers at the nest can provide advantageous plasticity in the amount of investment parents need to give to their eggs and chicks. (wikipedia.org)
  • The male incubates the eggs for some 48 to 56 days, but once the chicks hatch, they can walk and leave the nest within 1 to 3 days. (birdfact.com)
  • Initially, the male provided the food to the chicks and the female remained in the nest caring for the brood. (bvsalud.org)
  • After approximately a month, the female also began to leave the nest and return with prey , which was offered to the chicks, with the male also continuing this behavior . (bvsalud.org)
  • However, they can cause damage to a variety of wooden structures by excavating tunnels for their nests. (whatsthatbug.com)
  • Nest site reuse was also common (35%), though not related to season. (cifor.org)
  • However, we encountered wet season arboreal nesting, day nest construction, and overall nest site reuse more frequently than reported for other sites. (cifor.org)
  • Nested graphs are useful to organize and reuse sections of your app's UI, such as a self-contained login flow. (android.com)
  • After a few repairs to the nest, the eggs (usually three) are laid. (birdwatchersgeneralstore.com)
  • Emu nests are rudimental, consisting of a small pile of leaves or grasses, which are sometimes laid in a shallow indent scraped into the ground. (birdfact.com)
  • In early April, after spending several days constructing the nest, the female laid two eggs and began to incubate them. (adventurepublications.net)
  • People also use a variety of items for nesting boxes like buckets laid on their sides, old milk crates or even cardboard boxes! (backyardchickens.com)
  • Parrots in general are not among nature's most skilled nest-builders and cockatiels are no exception, preferring instead to use a ready-made tree hollow or cavity. (birdfact.com)
  • Studies find that most nests are built near some sort of tree or foliage cover rather than in exposed areas. (birdfact.com)
  • Additionally, if the first nest fails, crows may construct a second nest in the same tree or nesting location. (birdsology.com)
  • I watched as they tore strips of bark fiber off a nearby tree and take it into the nest. (bwdmagazine.com)
  • In general, the nesting, or summer range of robins extends from the tree limit in northern North America to southern Mexico, and the winter range covers southern Canada to Guatemala. (massaudubon.org)
  • The nest of an American Kestrel is built in a cavity, often a cavity in a tree, either a natural cavity or an old woodpecker hole. (sdakotabirds.com)
  • If the geese feel that their nesting area is not safe, they may leave to find a more secure location. (birdsandwetlands.com)
  • Additionally, it can automatically set itself into Eco Temperature mode when you're away from your home (with location data provided by the Nest app on your phone) to save energy. (imore.com)
  • On 7 December 2005 we discovered a nest containing three nestlings at the southeastern end of Lagoa Pequena, municipality of Pelotas, Rio Grande do Sul. (scielo.br)
  • An adult bird spent on average 0.7 ± 0.56 minutes inside the nest attending nestlings. (scielo.br)
  • The best they can do is create a new nest and hope it will be waiting for them when they return next spring…if another storm or a young hussy doesn't get to it first. (birdwatchersgeneralstore.com)
  • Young couples often nest for a period before getting to know the neighbors. (colorado.edu)
  • They are great nomads, migrating at almost any season, and settling down to nest and raise young when they find an abundant crop of spruce cones. (birdsandblooms.com)
  • The holes bored into wood are actually nesting sites for their young. (whatsthatbug.com)
  • When the eggs hatch, the male initially brings food while the female tends to the young, but soon both parents are bringing food back to the nest site. (sdakotabirds.com)
  • The young leave the nest after about 10 days. (sdakotabirds.com)
  • Overall, 55% of night nests were constructed on the ground and 45% in trees. (cifor.org)
  • Cockatiel nests are located at least 1m to 1.8m (3ft 3 in to 6ft) off the ground, but are often found at higher altitudes too, upwards of 2m (6.5 ft). (birdfact.com)
  • Emus nests are built on flat ground or loosely scraped into the dirt. (birdfact.com)
  • Crows, however, often construct their nests on or very near the ground. (birdsology.com)
  • One study of American crows in Mandarte, British Columbia, for instance, discovered that almost 45% of the nests were constructed on the ground. (birdsology.com)
  • The Edible-nest Swiftlets ( Aerodramus fuciphagus ) is a small bird of the swift family which is found in South-east Asia. (earthlife.net)
  • I found it amusing to see that bird behavior sometimes can be like human behavior: I watched the male carry a small twig into the cavity only to have the female follow him right behind, and immediately throw the same stick out of the hole! (bwdmagazine.com)
  • We returned to the area on 15 December 2005 and found the nest abandoned. (scielo.br)
  • Dogs have also been found to shun unhelpful people , similar to behavior shown in human infants and capuchin monkeys. (nationalgeographic.com)
  • They are now 8 weeks old and last night we found this tiny egg in a nesting box. (backyardchickens.com)
  • In a abandoned nest of P. simillimus nest cells re-utilized for nesting T. (T.) diversipes was found. (bvsalud.org)
  • Lowell found that prairie voles lived two to a nest-the same pair-for life. (medscape.com)
  • Even though the nest you saw being built in August won't be turning out any babies this year, Dick, there's an excellent chance it will be productive next summer. (birdwatchersgeneralstore.com)
  • Emus do have nests, though they're built on the floor rather than in trees. (birdfact.com)
  • The male emu builds a rudimental nest which is sometimes built on the flat and sometimes built in a narrow hollow scraped into the dirt up to 10 cm deep at the most. (birdfact.com)
  • The nest itself is built in an open area with a low level of surrounding foliage to provide shelter and camouflage. (birdfact.com)
  • For three years, I have been photographing a pair of Sandhill Cranes nesting, and this year they built their nest in the best place possible, allowing me to study their behavior in detail. (adventurepublications.net)
  • The nest was built of fine pieces of dead Scirpus olneyi (Cyperaceae) and S. densiflora leaves firmly interlaced to the internal leaves of the tussock. (scielo.br)
  • Squirrels leave a scent trail on the branches of trees that they use to travel around and find their nest. (bwdmagazine.com)
  • That's usually the best place to get your pine shavings (make sure not it's pine not cedar) and you might find nesting boxes there. (backyardchickens.com)
  • In fact, the first thing a returning male Osprey does, even before he stops at the post office to pick up the mail, is to go to last year's nest, make repairs and wait for his mate to arrive. (birdwatchersgeneralstore.com)
  • The nest is often defended as part of the territory by the male and female mouse. (mousebehavior.org)
  • As part of their courtship behavior, I witnessed the male feeding the female a seed from my feeder, which he boldly grabbed while I was standing with my camera only a few feet away. (bwdmagazine.com)
  • a single male was reared from a pupa in the nest. (acguanacaste.ac.cr)
  • Its nest is made of solidified saliva and is used to make bird's nest soup - a delicacy in Chinese cuisine. (earthlife.net)
  • Where do crows make their nests? (birdsology.com)
  • As it learns, the Nest Learning Thermostat creates an automatic schedule, and you can still make temperature adjustments either on the thermostat itself or with Alexa or Google Assistant. (imore.com)
  • We measured the following factors for daylight hours: percentage of time the female was on the nest (attendance), length of attendance bouts by the female, length of nest recesses, and adult provisioning rates. (usgs.gov)
  • A group of crows was seen by one birdwatcher bringing sticks to a single female nest builder. (birdsology.com)
  • The female builds the nest. (sdakotabirds.com)
  • However, one should consider our findings when attempting to estimate Cross River gorilla density at other localities through nest site data. (cifor.org)
  • We recorded nesting data at 569 fresh night nest sites, comprising 7032 individual nests, of Cross River gorillas inhabiting the Kagwene Mountain in western Cameroon. (cifor.org)
  • The term "helper" was coined by Alexander Skutch in 1935 and defined more carefully in 1961 in the avian context as "a bird which assists in the nesting of an individual other than its mate, or feeds or otherwise attends a bird of whatever age which is neither its mate nor its dependent offspring. (wikipedia.org)
  • Day nest construction was common at Kagwene (n = 260 nest sites, mean nest group size = 5.98) and we encountered significantly more day nest sites in the wet season. (cifor.org)
  • The nests can fetch high prices and many colonies are harvested commercially. (earthlife.net)
  • How high are Cockatiel nests? (birdfact.com)
  • How high are Emu nests? (birdfact.com)
  • The nest was 244 mm high and 140 mm wide. (scielo.br)
  • Conclusions Findings suggest that increasing cigarette price can encourage cessation-related behaviors among high school smokers. (who.int)
  • In summer 2007, parent telephone interviews provided data on demographics, perceptions of skin cancer threat, sun protection behaviors, and physical activity. (cdc.gov)
  • This happens when one or more eggs in the nest do not develop properly, causing them to become deformed or unusually small. (birdsandwetlands.com)
  • 3) as a tumor presenting extensive stromal desmoplasia with small nests, cords and strands of tumoral odontogenic epithelium. (bvsalud.org)
  • Nest construction picks up steam during the brighter days of March but may continue far into June if circumstances are unfavorable or if nests collapse. (birdsology.com)
  • The construction of a nest may get rather hectic when there are many helpers. (birdsology.com)
  • The process of copulation is usually carried out in the final phase of nest construction. (bestavple.com)
  • This study explored the association between state-level tobacco control policies and youth smoking cessation behaviors from 1991-2006. (who.int)
  • Methods The study design was a population-based, nested survey of students within states. (who.int)
  • Methods: The Regional Rural Injury Study-II included a population-based nested case-control study involving 7,420 agricultural households. (cdc.gov)
  • Following job demand-control theoretical principles, in this cross-sectional study of 1229 nurses nested in 104 hospital units, we tested the hypothesis that psychological distress (a risk factor for mental illness) would be lower for nurses where coworkers reported higher levels of schedule control at their units. (cdc.gov)
  • and used a nested case control group to examine cancers of interest identified in the first study. (cdc.gov)