• California Brown Pelican Portrait With Twisted Neck, overcast light, winter adult breeding plumage, head twisted to face backwards as it preens, eyes locked on camera. (oceanlight.com)
  • Many species of birds show distinctive seasonal breeding and nonbreeding plumages. (datadryad.org)
  • This result helps explain the apparent paradox of birds that molt biannually but show breeding plumages that are identical to the nonbreeding plumage. (datadryad.org)
  • These birds are sporting their breeding plumage as indicated by the mohawk-like crests on the backs of their heads. (dfwurbanwildlife.com)
  • The magnitude of hue change was not, however, related to an individual's age or initial plumage redness, which suggests that certain birds are not more or less prone to fading. (elsevierpure.com)
  • Entirely absent in some birds-notably from many members of the Columbidae family (pigeons and doves)-afterfeathers can significantly increase the insulative attributes of a bird's plumage. (wikipedia.org)
  • The plumage of birds during the courtship or breeding season. (wikipedia.org)
  • The alternate plumage is commonly brighter than the basic plumage, for the purposes of sexual display, but may also be cryptic, to hide incubating birds that might be vulnerable on the nest. (wikipedia.org)
  • These brightly colored birds are now only found in southwest Mauritius and on the small, offshore island of Ile aux Aigrettes, where captive-bred birds were released in 2003. (earthlife.net)
  • There are several reasons we breed from our chickens: to produce birds to show, to increase the size of our flock, to sell fertile eggs or birds, to improve our bloodlines or simply to enjoy incubating and hatching your own chicks . (poultrykeeper.com)
  • You will find some articles below to help you start breeding and some more advanced topics on selecting birds for the breeding pen and making your own line of birds and fixing specific traits into your line. (poultrykeeper.com)
  • you will soon be selecting birds for the breeding pen. (poultrykeeper.com)
  • One interesting fact about Common Terns is that they are highly social birds and often form large colonies during the breeding season. (articleinsider.com)
  • These birds undertake long-distance journeys, traveling thousands of kilometers between their breeding grounds in the northern hemisphere and their wintering grounds in the southern hemisphere. (articleinsider.com)
  • During their non-breeding season, these birds migrate to coastal areas in North Africa, South America, and the Caribbean. (articleinsider.com)
  • Non-breeding birds may form small flocks. (earthlife.net)
  • These fairly drab birds have a brown or grey upper plumage that is sometimes streaked. (earthlife.net)
  • Further, no difference in eye size was measured in two species of migratory birds, regardless of which part of the city they were breeding in. (forbes.com)
  • Professor Phillips, Dr Jones and collaborators found no differences in body size in the study birds breeding either in urban or edge areas of San Antonio - except in one species: the Painted Bunting. (forbes.com)
  • The many islands of the West Indies represent the wintering grounds of numerous North American migratory birds ( 6 , 7 ) that breed in or migrate through WNV transmission foci in the United States. (cdc.gov)
  • Birds' ages were assessed by plumage, skull ossification, and presence or absence of a bursa of Fabricius. (cdc.gov)
  • For species that had both migratory and resident populations, we based status assessment on breeding conditions (breeding birds were assumed to be resident). (cdc.gov)
  • In a 15-year study of two populations of blue tit birds in the South of France, it was found that the bird's striking blue and yellow plumage is declining in vibrancy . (medscape.com)
  • Blue tits are adapting, but the change in aesthetics of their plumage also affects the mating patterns of the species because the birds use their color to help attract mates, with vibrancy being important to prove they are worthy suitors . (medscape.com)
  • Other means of exposure include bird bites, mouth-to-beak contact, and the handling of infected birds' plumage and tissues. (cdc.gov)
  • During the breeding season, adults develop a black cap on their heads and a red-orange bill, which adds to their striking appearance. (articleinsider.com)
  • In winter months, breeding adults assume a dramatic plumage. (oceanlight.com)
  • Adults in breeding plumage are very distinctive but the ones on the Upper Texas Coast are immatures or nonbreeding adults. (houstonaudubon.org)
  • All appeared to be adults in breeding plumage. (xeno-canto.org)
  • In breeding plumage adults have longish plumes descending from their tails. (tn.gov)
  • Outside of breeding plumage, both sexes become duller but usually still show yellow rump and side patches. (birdforum.net)
  • The variation in plumage between the sexes is linked to the breeding. (worldatlas.com)
  • Some species have different breeding and non-breeding plumages. (earthlife.net)
  • They measured the morphological phenotypes of two residential species - Carolina Wrens, Thryothorus ludovicianus , and Northern Cardinals, Cardinalis cardinalis - and two migratory species - Painted Bunting, Passerina ciris , and White-eyed Vireo, Vireo griseus - that were breeding either in urban core or edge habitats in San Antonio, Texas. (forbes.com)
  • An estimated 3% of the species' North American breeding range lies within the Boreal Forest. (borealbirds.org)
  • Sri Lanka is home to 439 bird species, 33 of them found nowhere else on Earth, including breeding residents and migratory species. (mongabay.com)
  • A similar migratory species, Layard's flycatcher ( Muscicapa muttui ), also known as the brown-breasted flycatcher , is a small bird that breeds in northeastern India. (mongabay.com)
  • Exotic species known or suspected to be escaped or released, including those that have bred but don't yet fulfill the criteria for Provisional. (ebird.org)
  • Over 5800 breeding blue tits nesting in the South of France were captured and studied between 2005 and 2019 to have the coloring and other characteristics of the species noted . (medscape.com)
  • Breeding males of the Myrtle form and the form sometimes called Audubon's Warbler both have grey mantle with black stripes. (birdforum.net)
  • The young males have female-like plumage and may obtain the full adult plumage after about seven years. (worldatlas.com)
  • There is no breeding plumage for the males. (bsc-eoc.org)
  • Plumage is very important in this breed, with large, broad feathers that fit relatively smooth against the body being preferred. (hobbyfarms.com)
  • Brown pelican portrait, displaying winter non-breeding plumage with distinctive yellow head feathers and red gular throat pouch but white hind neck. (oceanlight.com)
  • Brown pelican portrait, displaying winter plumage with distinctive yellow head feathers and red gular throat pouch. (oceanlight.com)
  • Brown pelican preening, cleaning its feathers after foraging on the ocean, with winter breeding plumage including distinctive dark brown nape, yellow head feathers and red gular throat pouch. (oceanlight.com)
  • We used phylogenetic comparative methods and path analysis to understand how and why distinctive breeding and nonbreeding plumages evolve in this family. (datadryad.org)
  • We find support for a two-step process for the evolution of distinctive breeding and non-breeding plumages: that prealternate molt evolves primarily under selection for feather renewal, with seasonal color change sometimes following later. (datadryad.org)
  • Identification of polymorphisms in MITF and DCT genes and their associations with plumage colors in Asian duck breeds. (cdc.gov)
  • Adult winter breeding plumage showing brown hindneck and red gular throat pouch. (oceanlight.com)
  • Note adult winter breeding plumage in display, with brown neck, red gular throat pouch and yellow and white head. (oceanlight.com)
  • Adult winter non-breeding plumage showing white hindneck and red gular throat pouch (but transitioning to brown hind neck). (oceanlight.com)
  • A perfect Brown Pelican Head Throw with Distant Ocean in Background, bending over backwards, stretching its neck and gular pouch, winter adult non-breeding plumage coloration. (oceanlight.com)
  • McGraw, KJ & Hill, GE 2004, ' Plumage color as a dynamic trait: Carotenoid pigmentation of male house finches (Carpodacus mexicanus) fades during the breeding season ', Canadian Journal of Zoology , vol. 82, no. 5, pp. 734-738. (elsevierpure.com)
  • This ornate plumage fades to a dull gray in the nonbreeding season, although it keeps its distinct white eyebrow year-round. (houstonaudubon.org)
  • The negative change in plumage color appears to coincide with climate change in the blue tits' habitat, where there has been a combination of a rise in temperature and a drop in rainfall . (medscape.com)
  • Exploring the Dotterel Mountains: Improving the understanding of breeding habitat characteristics of an Arctic-breeding specialist bird. (lu.se)
  • The once striking plumage color of the blue tit has steadily gotten duller over the past decade and a half, and climate change appears to be the cause, according to scientists from the University of Basque Country in Spain and the Centre d'Ecologie Fonctionnelle et Évolutive in Montpellier, France. (medscape.com)
  • Stilt Sandpipers are common fall migrants in Texas, flying from their breeding grounds in the Arctic to their wintering grounds in South America. (houstonaudubon.org)
  • Behavioural responses of breeding arctic sandpipers to ground-surface temperature and primary productivity. (lu.se)
  • Here, we examined relationships between life-history variation, the evolution of a seasonal molt, and seasonal plumage dichromatism in the new world warblers (Aves: Parulidae), a family with a remarkable diversity of plumage, molt, and life history strategies. (datadryad.org)
  • Collectively, these findings imply that researchers should more carefully track plumage color expression during the course of a year, as seasonal color shifts may have important consequences for late-season male-male competitive interactions and flexible female mating tactics (e.g., social mate switching, choice of extra-pair partners). (elsevierpure.com)
  • Potential mechanisms for this seasonal plumage color shift are discussed. (elsevierpure.com)
  • Breeds on arctic tundra in far northern Europe and northwestern Asia . (birdforum.net)
  • Breeds on coastal tundra around shores of Arctic Ocean, farther inland in Alaska. (borealbirds.org)
  • California brown pelican, showing characteristic winter plumage including red/olive throat, brown hindneck, yellow and white head colors. (oceanlight.com)
  • Note the winter mating plumage, olive and red throat, yellow head. (oceanlight.com)
  • While this adult brown pelican exhibits the brown hind neck of a breeding adult, it displays an unusual orange throat rather than the more typical red. (oceanlight.com)
  • Brown pelicans jousting, with bright red throat, yellow and white head and brown hind neck, winter plumage. (oceanlight.com)
  • Portrait of two California brown pelicans with breeding plumage, note the striking red throat, yellow and white head. (oceanlight.com)
  • After the breeding season, the male molts into the plainer "winter plumage" (described below). (earthlife.net)
  • Winter adult non-breeding plumage. (oceanlight.com)
  • The Great Egret is an uncommon breeding bird and a rare winter visitor to the state. (tn.gov)
  • The winter plumage is quite gray compared to the breeding plumage. (ucr.edu)
  • 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)
  • Evolutionary biologists studying sexually selected bird plumage generally consider this trait to be static throughout a breeding season and assign trait values to individuals on the basis of single measurements. (elsevierpure.com)
  • Current Breeding Bird Survey results indicate the population may be increasing in the state. (tn.gov)
  • A bird has been tracked from its Southern Hemisphere summertime home in New Zealand to its breeding ground in Alaska - and back again. (bbc.co.uk)
  • The sex and breeding condition of each bird were determined by examination and measurement of gonads. (cdc.gov)
  • The word piebald itself has been attributed to a combination of the "pie" in the magpie (a bird of black and white plumage) and the "bald" of the bald eagle (the United States' national bird, which has a white feathered head). (medscape.com)
  • She then flew a further 5,000km (3,000 miles) to the godwit breeding grounds in Alaska. (bbc.co.uk)
  • It may make it more difficult for them to adjust to city life during the breeding season," Professor Phillips elaborated. (forbes.com)
  • This delicate gull is seldom seen outside the breeding season as it is almost exclusively oceanic. (borealbirds.org)
  • In the breeding season from April to August, it has heavy, dark barring with a rufous cap and cheek patch. (houstonaudubon.org)
  • Cattle Egrets can have a yellow bill and black legs during the non-breeding season, but are much shorter and stockier. (tn.gov)
  • During the breeding season they have a orange wash over the head, back, and chest. (tn.gov)
  • The Great Egret is most numerous in Tennessee in late summer when post-breeding migrants from outside the state are present. (tn.gov)
  • Black-throated diver (Gavia arctica) in breeding plumage. (123rf.com)
  • A common question in relation to breeding is: what will be the outcome of crossing a black to a white fowl? (poultrykeeper.com)
  • They breed in areas with coastal habitats, such as beaches, cliffs, and barrier islands. (articleinsider.com)
  • We investigated the propensity for carotenoid-based color of feather patches in male house finches (Carpodacus mexicanus (Muller, 1776)) to change during the breeding period. (elsevierpure.com)
  • Autosexing breeds are pure breeds of poultry that have different coloured male and female young as day-olds. (poultrykeeper.com)
  • A dual-purpose breed from England, they are very popular in backyard flocks in America. (hobbyfarms.com)
  • The plumage of the Common Tern is predominantly gray on its upperparts, while its underparts are a crisp white color. (articleinsider.com)
  • This adult is just transitioning to the brown hind neck characteristic of the brown pelican breeding plumage. (oceanlight.com)
  • Brown Pelican in breeding plumage. (zhibit.org)
  • This social nature not only helps with breeding success but also provides protection against predators, as the collective presence of many terns can deter potential threats. (articleinsider.com)
  • Adult whiskered auklet (Simorhynchus pygmaeus) in breeding plumage, in: "Contributions to the Natural History of Alaska", No. II, 1886, by L. M. Turner. (allrefer.com)
  • They breed in northern Alaska and Canada. (houstonaudubon.org)
  • Exotic population is self-sustaining, breeding in the wild, persisting for many years, and not maintained through ongoing releases (including vagrants from Naturalized populations). (ebird.org)
  • 2019 . Small changes in timing of breeding among subarctic passerines over 32 years. (lu.se)
  • The juvenile Red-necked Grebe is in the first photo and the adult in breeding plumage is in the second photo. (birdrap.com)