It is not long after this molting is complete that they start a second molt to acquire their alternate plumage. |
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That scheduling results in little overlap between molt of rectrices and outer primaries, both of which are important to landing. |
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The seasonal molt of their woolly winter hair makes them look even more wretched. |
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Marbled Murrelets are unusual among the alcids in that they molt to cryptic-brown plumage during the breeding season. |
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The fifth molt produces winged adults that spend the winter buried in plant litter. |
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Unlike most birds with different breeding and non-breeding plumages, longspurs molt only once a year. |
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The cephalothorax of spiders is a sclerotized body part that does not change after the final molt. |
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The lack of molt in adults of that species prior to autumn migration probably accounts for this difference. |
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Ostracods shed the carapace with each molt, whereas the conchostracans simply add material to the carapace as they grow. |
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White cobwebs hung from one corner of the shop, the occupant long since dead, molt shells from various insects scattered across the floor. |
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In the fall they stop over at molt sites en route to their wintering areas, where they molt and grow new feathers before they move on. |
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Unlike most birds with different breeding and non-breeding plumages, buntings molt only once a year. |
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The scales are shed individually, so crocodilians do not molt like snakes do. |
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Each year chickens molt, often looking quite ugly, but are rewarded with new and sturdy feathers. |
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Because of their hard exoskeleton, to increase in size they must molt or shed their exoskeleton and produce a new one. |
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This biasing factor is unique to organisms that molt or shed their skin during growth. |
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These birds molt twice a year changing between alternate and basic plumage. |
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Once a year, though, when the birds molt, the tiny arthropods face life-or-death options. |
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Once animals have emerged as adults, they do not molt again, and their size and external morphology are fixed. |
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The larval stage consists of four phases, or instars, with a complete molt between each instar. |
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They molt twice a year, the first molt, after breeding, gives the males their eclipse plumage. |
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Birds eating balanced diets should have no trouble satisfying their nutritional needs during a molt. |
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While all feathers wear, they are replaced regularly by the molt processes. |
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During each molt the animal calcifies a new carapace of about twice the volume of the previous one. |
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Occasionally, females disperse at their penultimate instar and undergo their final molt in their new webs. |
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The first smaller pulse induces switchover from larval to pupal commitment, and the second much larger pulse induces the pupal molt. |
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After male murres and Razorbills take their small, flightless chicks to sea, they themselves undergo a prebasic molt, becoming flightless. |
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This is Kaieteur Falls, one of the molt spectacular cataracts in the world. |
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Almost a century ago, Zeleny removed the eyestalks from the fiddler crab, Uca pugilator, and observed a dramatic shortening of the molt interval. |
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Not until age six will a young condor molt its brown feathers and grow the black-and-white plumage of adults. |
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In late December, chicks fledge, and adults leave the colonies to feed and molt. |
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Large flocks of unsuccessful breeders and immature birds concentrate in shallow wetlands to molt flight feathers. |
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At this time the males molt their feathers and go through a month-long period of flightlessness while their new feathers grow in. |
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While males remain white, females molt into one of the most cryptic plumages known in birds. |
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Small potholes may hold water long enough for crabs to molt, but not to undergo larval development. |
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The MIH transcript is detectable in eyestalk neural ganglia throughout the molt cycle of the blue crab, Callinectes sapidus. |
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Once in New York, the eggs hatch into larvae, molt into pupae, and finally emerge as adults, ready to take on the Big Apple. |
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We were especially careful in excluding specimens in molt by checking all specimens for the presence of feather quills. |
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Other studies of riparian breeding birds in which juveniles molt on the breeding grounds have not examined that possibility. |
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Asymmetrical patches of growing feathers were considered adventitious replacement and not scored as molt. |
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Therefore, we encourage others to study molt in alcids and other seabirds by collaborating with zoos, aquaria, and others around the world that house such species. |
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Snakes molt as they grow, shedding the old skin and growing a larger new skin. |
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To calculate the flight-feather molt score of a molting bird, it is necessary to accurately estimate how long each flight feather will be when it is fully grown. |
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The fall migration is preceded by a molt migration where birds molt in large groups at northern coastal sites before heading south in fresh plumage. |
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The Ecdysozoa, all of which molt and lack motile locomotory cilia, include priapulids, kinorhynchs, nematodes, nematomorphs, tardigrades, onychophorans, and arthropods. |
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The molt is restricted to replacing feathers on the head and body. |
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They noted that the cephalopod eagerly attacked the molt and invariably did so by working from the posterior of the lobster abdomen toward the anterior. |
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Tryptophan catabolites are involved in crustacean molt regulation. |
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Normally, new ommatidia are added at the dorsal margin of the eye, and thus the retina gradually enlarges with growth of the eye at each successive molt. |
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Juvenile thrips molt through two stages, or instars, before pupating. |
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Carapace width does not vary within a molt and is proportional to the length of the males' raptorial forelimbs, which they use in attacking other males. |
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Flight-feather molt categories were symmetric, adventitious, and juvenal. |
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Despite the delay in molt, male plumage does not remain immaculate. |
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Also, hermit crabs commonly kept as pets molt and shed their exoskeleton. |
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The specimen from Massachusetts was an after-hatching-year bird with newly acquired basic plumage and fully developed and unworn flight feathers, indicative of early molt. |
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During early summer, the adults undergo their annual monthlong molt, and the goslings do not yet know how to fly and depend on food they can walk to, such as mowed grass. |
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Moult patterns and molt migration in the Black-necked Grebe Podiceps nigricollis. |
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They spend most of their lives in the water, but come ashore to mate, give birth, molt or escape from predators, like sharks and killer whales. |
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They spend their lives in the water, having to mate, give birth, molt or escape from predators, like killer whales, underwater. |
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Seals congregate annually on the ice to molt before migrating to summer feeding grounds. |
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Throughout all areas, the hooded seals whelp in late March and early April and molt from June to August. |
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Before a molt, the snake stops eating and often hides or moves to a safe place. |
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Turtles do not molt their skins all at once as snakes do, but continuously in small pieces. |
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We measured molt habitat vegetation with 17 quadrats at molting sites for Wood Thrushes. |
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The Mergini take on the eclipse plumage during the late summer, and molt into their breeding plumage during the winter. |
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For a larva to molt into the preadult stage called a pupa, however, juvenoids must be absent. |
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The molt stage was determined by examining the uropod in which partial retraction of the epidermis could be observed. |
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Advancement and symmetry of molt were determined for 637 first-year common snipes captured at Jeziorsko reservoir, central Poland, during autumn migration. |
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Remigial molt in fall migrant Long-eared and Northern Saw-whet owls. |
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Breeding and postnuptial molt of the Red-vented Bulbul in western Samoa. |
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There have been no comprehensive studies published on other cathartid vultures for additional comparisons of differences in molt in the Cathartidae. |
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The Northern Cardinal is a socially monogamous, dichromatic, year-round resident that exhibits a single annual molt immediately after the breeding season. |
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Ulcers most likely resulted in an inability to molt because adhesion of the internal tissues to the old cuticle is a common sequella to ulcerative events. |
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The effects of long-term caging and molt of Single Comb White Leghorn hens of heterophil to lymphocyte ratios, corticosterone and thyroid hormones. |
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Eccentric first-year molt patterns in certain tyrannid flycatchers. |
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We tested for the possibility of a link between asymmetry in feather replacement and hemoglobin concentration of first-year common snipe during the partial postjuvenile molt. |
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