DucksInfluenza in Birds: Infection of domestic and wild fowl and other BIRDS with INFLUENZA A VIRUS. Avian influenza usually does not sicken birds, but can be highly pathogenic and fatal in domestic POULTRY.GeesePoultry Diseases: Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild.Cloaca: A dilated cavity extended caudally from the hindgut. In adult birds, reptiles, amphibians, and many fishes but few mammals, cloaca is a common chamber into which the digestive, urinary and reproductive tracts discharge their contents. In most mammals, cloaca gives rise to LARGE INTESTINE; URINARY BLADDER; and GENITALIA.Hepadnaviridae Infections: Virus diseases caused by the HEPADNAVIRIDAE.Anseriformes: An order of BIRDS comprising the waterfowl, particularly DUCKS; GEESE; swans; and screamers.Hepatitis B Virus, Duck: A DNA virus that closely resembles human hepatitis B virus. It has been recovered from naturally infected ducks.Hepatitis, Viral, Animal: INFLAMMATION of the LIVER in animals due to viral infection.Influenza A Virus, H5N1 Subtype: A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 5 and neuraminidase 1. The H5N1 subtype, frequently referred to as the bird flu virus, is endemic in wild birds and very contagious among both domestic (POULTRY) and wild birds. It does not usually infect humans, but some cases have been reported.Bird Diseases: Diseases of birds not considered poultry, therefore usually found in zoos, parks, and the wild. The concept is differentiated from POULTRY DISEASES which is for birds raised as a source of meat or eggs for human consumption, and usually found in barnyards, hatcheries, etc.Influenza A virus: The type species of the genus INFLUENZAVIRUS A that causes influenza and other diseases in humans and animals. Antigenic variation occurs frequently between strains, allowing classification into subtypes and variants. Transmission is usually by aerosol (human and most non-aquatic hosts) or waterborne (ducks). Infected birds shed the virus in their saliva, nasal secretions, and feces.Diving: An activity in which the organism plunges into water. It includes scuba and bell diving. Diving as natural behavior of animals goes here, as well as diving in decompression experiments with humans or animals.Animals, Wild: Animals considered to be wild or feral or not adapted for domestic use. It does not include wild animals in zoos for which ANIMALS, ZOO is available.Influenza A Virus, H5N2 Subtype: A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 5 and neuraminidase 2. The H5N2 subtype has been found to be highly pathogenic in chickens.Reassortant Viruses: Viruses containing two or more pieces of nucleic acid (segmented genome) from different parents. Such viruses are produced in cells coinfected with different strains of a given virus.Virus Shedding: The expelling of virus particles from the body. Important routes include the respiratory tract, genital tract, and intestinal tract. Virus shedding is an important means of vertical transmission (INFECTIOUS DISEASE TRANSMISSION, VERTICAL).Salt Gland: A compound tubular gland, located around the eyes and nasal passages in marine animals and birds, the physiology of which figures in water-electrolyte balance. The Pekin duck serves as a common research animal in salt gland studies. A rectal gland or rectal salt gland in the dogfish shark is attached at the junction of the intestine and cloaca and aids the kidneys in removing excess salts from the blood. (Storer, Usinger, Stebbins & Nybakken: General Zoology, 6th ed, p658)Flavivirus Infections: Infections with viruses of the genus FLAVIVIRUS, family FLAVIVIRIDAE.Poultry: Domesticated birds raised for food. It typically includes CHICKENS; TURKEYS, DUCKS; GEESE; and others.Birds: Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.Pediococcus: A genus of gram-positive, facultatively anaerobic bacteria whose growth is dependent on the presence of a fermentable carbohydrate. No endospores are produced. Its organisms are found in fermenting plant products and are nonpathogenic to plants and animals, including humans.ThioglucosidesAnimal Nutrition Sciences: The study of NUTRITION PROCESSES, as well as the components of food, their actions, interaction, and balance in relation to health and disease in animals.Probiotics: Live microbial DIETARY SUPPLEMENTS which beneficially affect the host animal by improving its intestinal microbial balance. Antibiotics and other related compounds are not included in this definition. In humans, lactobacilli are commonly used as probiotics, either as single species or in mixed culture with other bacteria. Other genera that have been used are bifidobacteria and streptococci. (J. Nutr. 1995;125:1401-12)Animal Feed: Foodstuff used especially for domestic and laboratory animals, or livestock.Weight Gain: Increase in BODY WEIGHT over existing weight.Bays: An area of water mostly surrounded by land, usually smaller than a gulf, and affording access to the sea.Beluga Whale: The species Delphinapterus leucas, in the family Monodontidae, found primarily in the Arctic Ocean and adjoining seas. They are small WHALES lacking a dorsal fin.Walruses: The family Odobenidae, suborder PINNIPEDIA, order CARNIVORA. It is represented by a single species of large, nearly hairless mammal found on Arctic shorelines, whose upper canines are modified into tusks.Gadiformes: An order of fish including the families Gadidae (cods), Macrouridae (grenadiers), and hakes. The large Gadidae family includes cod, haddock, whiting, and pollock.Pacific OceanSvalbardLizardsMyogenin: A myogenic regulatory factor that controls myogenesis. Myogenin is induced during differentiation of every skeletal muscle cell line that has been investigated, in contrast to the other myogenic regulatory factors that only appear in certain cell types.Myosins: A diverse superfamily of proteins that function as translocating proteins. They share the common characteristics of being able to bind ACTINS and hydrolyze MgATP. Myosins generally consist of heavy chains which are involved in locomotion, and light chains which are involved in regulation. Within the structure of myosin heavy chain are three domains: the head, the neck and the tail. The head region of the heavy chain contains the actin binding domain and MgATPase domain which provides energy for locomotion. The neck region is involved in binding the light-chains. The tail region provides the anchoring point that maintains the position of the heavy chain. The superfamily of myosins is organized into structural classes based upon the type and arrangement of the subunits they contain.Troponin: One of the minor protein components of skeletal muscle. Its function is to serve as the calcium-binding component in the troponin-tropomyosin B-actin-myosin complex by conferring calcium sensitivity to the cross-linked actin and myosin filaments.Muscle, Skeletal: A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.Troponin C: One of the three polypeptide chains that make up the TROPONIN complex of skeletal muscle. It is a calcium-binding protein.MyoD Protein: A myogenic regulatory factor that controls myogenesis. Though it is not clear how its function differs from the other myogenic regulatory factors, MyoD appears to be related to fusion and terminal differentiation of the muscle cell.Slovakia: Created 1 January 1993 as a result of the division of Czechoslovakia into the Czech Republic and Slovakia.Czech Republic: Created 1 January 1993 as a result of the division of Czechoslovakia into the Czech Republic and Slovakia.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)MedlinePlus: NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.Gypsies: Ethnic group originating in India and entering Europe in the 14th or 15th century.Bivalvia: A class in the phylum MOLLUSCA comprised of mussels; clams; OYSTERS; COCKLES; and SCALLOPS. They are characterized by a bilaterally symmetrical hinged shell and a muscular foot used for burrowing and anchoring.Nomograms: Graphical representation of a statistical model containing scales for calculating the prognostic weight of a value for each individual variable. Nomograms are instruments that can be used to predict outcomes using specific clinical parameters. They use ALGORITHMS that incorporate several variables to calculate the predicted probability that a patient will achieve a particular clinical endpoint.Facial Muscles: Muscles of facial expression or mimetic muscles that include the numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. (From Stedman, 25th ed)Nesting Behavior: Animal behavior associated with the nest; includes construction, effects of size and material; behavior of the adult during the nesting period and the effect of the nest on the behavior of the young.Clutch Size: The number of offspring produced at one birth by an oviparous or ovoviviparous animal.Equipment Reuse: Further or repeated use of equipment, instruments, devices, or materials. It includes additional use regardless of the original intent of the producer as to disposability or durability. It does not include the repeated use of fluids or solutions.Courtship: Activities designed to attract the attention or favors of another.Trees: Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.
  • Now, researchers from the US and Spain have announced the discovery of a new genus and species named Aquilarhinus palimentus , with an aquiline nose and wide lower jaw shaped like two trowels side by side. (siliconrepublic.com)
  • The genus Rhodonessa was originally created for this species alone. (wikipedia.org)
  • The West Indian whistling duck is the largest (48-56 cm) and darkest of its genus. (wikipedia.org)
  • Parasites of the genus Sarcocystis are microscopic unicellular protozoans, whose lifecycle includes at least two animal species: the main host, a carnivore, and the intermediate host, which is the prey of the main host. (thepoultrysite.com)
  • The white-winged duck or white-winged wood duck ( Asarcornis scutulata ) is a large species of duck , formerly placed in the genus Cairina ( Muscovy duck ) and allied with the dabbling ducks . (wikipedia.org)
  • Thus, this species might more appropriately be placed in a monotypic genus, as Asarcornis scutulata , which appears to be closer to the redhead ( Aythya americana , diving ducks ). (wikipedia.org)
  • An international team of scientists, led by researchers at University of California, San Diego School of Medicine and the J. Craig Venter Institute (JCVI), have created the first comprehensive, cross-species genomic comparison of all 20 known species of Leptospira , a bacterial genus that can cause disease and death in livestock and other domesticated mammals, wildlife and humans. (phys.org)
  • Researchers from NOAA Fisheries, Kobe University and the University of British Columbia have recently announced the discovery of a new species of kelp - and a new genus altogether. (wikimedia.org)
  • The genus Cairina was proposed by Fleming 1822, with moschata as the type species. (cornell.edu)
  • Jean Delacour and Ernst Mayr, in their 1945 revision of the family Anatidae considered it a somewhat abnormal member of the Anatini (or river-ducks) group because the hind toe is slightly lobed, display behaviour and the tendency to feed at the surface. (wikipedia.org)
  • Due to the Burdekin duck's wide distribution and varied habitat, they are a thriving species! (australiazoo.com.au)
  • The Office of Law Enforcement contributes to Service efforts to manage ecosystems, save endangered species, conserve migratory birds, preserve wildlife habitat, restore fisheries, combat invasive species, and promote international wildlife conservation. (fws.gov)
  • Over the years the Hawaiian duck population declined for a variety of reasons, including habitat loss, modifications to wetland habitats for flood control, diseases, environmental contaminants, and predation by cats, rats, and mongooses. (hawaiireporter.com)
  • Designing the Species Conservation Habitat Project on the Salton Sea's receding shoreline has been exceedingly challenging due to the combination of unique project goals, very weak onsite soils, rapidly evolving site conditions and extreme environmental conditions. (archive.org)
  • In my career as a wetland habitat engineer for Ducks Unlimited, I have never faced a more challenging project. (archive.org)
  • Salton Sea Species Conservation Habitat Project - Final EIS/EIR and Final Design updates. (archive.org)
  • The Final EIS/EIR of the Salton Sea Species Conservation Habitat (SCH) document has been certified. (archive.org)
  • The Salton Sea Species Conservation Habitat Monitoring and Adaptive Management Plan (MAMP) is now available. (archive.org)
  • These species depend on the Salish Sea marine ecosystem for all or parts of their life history, such as reproduction, migration, molting, foraging or over-wintering habitat. (epa.gov)
  • Without stronger efforts to improve habitat, the population of these species will likely continue to decline and new species will be added to the list. (epa.gov)
  • All artists must depict this species, and any habitat appearing in the design must be typical for the Canada goose in Oklahoma. (newson6.com)
  • Our genetic results corroborate the display call divergence and Mathews' (Austral Avian Record 2:83-107, 1914 ) subspecies classification, and confirm that eastern and western populations of Musk Duck are currently isolated from each other. (springer.com)
  • This is why some bird experts treat the Hawaiian duck as a subspecies of the mallard. (hawaiireporter.com)
  • Although domestic ducks did not show clinical disease or death from HPAI V (H5N1) isolates from 2001 or before, experimental infection of domestic ducks with an HPAIV (H5N1) isolate from 2002 caused neurologic disease and death ( 16 ). (cdc.gov)
  • Between 2008 and 2011, 23 new species were identified as threatened or of concern, representing the greatest increase since the list was first established in 2002. (epa.gov)
  • This represents the largest increase in species of concern since the list was first established in 2002. (epa.gov)
  • To mate successfully with their chosen partners, Brennan says, female ducks assume a posture that allows males to enter them fully and deposit sperm near eggs. (scientificamerican.com)
  • The West Indian whistling duck has suffered extensive hunting for its eggs and for sport. (wikipedia.org)
  • The quiet and still water in the canals of the plantations provides an undisturbed and secluded location, away from local communities which may hunt the ducks or collect eggs. (wikipedia.org)
  • Speaking to newsmen after chairing a meeting of officials of animal husbandry department, revenue, police and local bodies here on Tuesday, Veena said there is no problem for eating the meat and eggs of healthy ducks. (flutrackers.com)
  • Predation on wood duck eggs and incubating hens by raccoons has been a significant limiting factor for wood duck populations. (illinois.edu)
  • Influenza-A viruses in ducks in northwestern Minnesota: fine scale spatial and temporal variation in prevalence and subtype diversity. (nih.gov)
  • On the other hand, for 2013 at least, duck and goose populations are in good shape and can provide opportunities that hunters may not want to overlook. (nodakoutdoors.com)
  • Musk Ducks ( Biziura lobata ) are endemic to Australia and occur as two geographically isolated populations separated by the Nullarbor Plain, a vast arid region in southern Australia. (springer.com)
  • We studied genetic variation in Musk Duck populations at coarse (eastern versus western Australia) and fine scales (four sites within eastern Australia). (springer.com)
  • In Alaska and the Yukon Territory, black cottonwood is primarily a coastal species, though 2 interior populations have been studied in the Yukon [ 74 ]. (fed.us)
  • During speciation the genome of one population becomes separated from other populations of the same species, which may lead to genomic incompatibility with time. (beds.ac.uk)
  • When populations diverge into species their gene pools become disconnected, and even in the absence of ecological differentiation stochastic effects, i.e., genetic drift, will drive each new species towards increased differentiation. (beds.ac.uk)
  • N. L. Staus (1997) The West Indian Whistling Duck Working Group initiated a conservation programme in 1997. (wikipedia.org)
  • Due to the species' sharp decline, the International Union for the Conservation of Nature (IUCN) has classed it as endangered . (newscientist.com)
  • Starting in October 2014, Farmer reached out to 20 friends in his ducking hunting network and asked for help to obtain specimens for testing, with everything permitted by the Missouri Department of Conservation (MDC) and the U.S. Fish and Wildlife Service (USFWS). (agweb.com)
  • Conservation of long-distance migratory species poses unique challenges. (usgs.gov)
  • Despite this evolutionary role in generating new species, hybridization may also represent an extinction risk with conservation concerns when it is motivated by anthropogenic factors. (nature.com)
  • Entries should be sent to the Duck Stamp Competition Coordinator, Oklahoma Department of Wildlife Conservation, 1801 N. Lincoln, P.O. Box 53465, Oklahoma City, OK 73152. (newson6.com)
  • But in New Zealand, conservation efforts have improved the situation for two species of Kiwi. (iucn.org)
  • Attempts to re-establish the species in Lane-Poole Conservation Park, about 100 km south of Perth, have failed largely due to poor food quality resulting from a drying climate. (iucn.org)
  • Long-tailed Duck: These ducks nest on the ground, usually near water. (whatbird.com)
  • Long-tailed Duck: Utters a melodious and barking, "ow-owdle-ow, ow-owdle-ow" when breeding. (whatbird.com)
  • Long-tailed Duck: Northern Pintail lacks orange on bill and white face patch. (whatbird.com)
  • Birds, in particular ducks, are recognised as a challenging and illustrative group of higher vertebrates for speciation studies. (beds.ac.uk)
  • Here are our closest matches for Species, age, and sex identification of ducks using wing plumage by Carney, Samuel M. (abebooks.com)
  • Excerpt from Species, Age and Sex Identification of Ducks Using Wing Plumage Flight feathers attached to the hand (manus) Flight feathers attached to the forearm (ulna) Incorrect (morphologically) but used here to designate the more prox imal secondaries which are generally different in size, shape, and color from their more distal counterparts, are often sexually dimorphic, and usually molt with adjacent body feathers. (abebooks.com)
  • Luckily, currently males are easier to identify to species as they are in their alternate (breeding) plumage. (vaildaily.com)
  • American Black Ducks breed in a variety of wetland habitats, from salt marshes to beaver ponds, river islands, and boreal bogs. (tn.gov)
  • What's more, state biologist Shane Granier estimated 55 percent of the 1,288 ducks taken over Pointe-aux-Chenes Wildlife Management Area marshes were dos gris, which made up 7-8 percent of the take on Atchafalaya Delta, Pass a Loutre and Salvator WMAs. (houmatoday.com)
  • That's right, it's duck season in Hawaii, and the US Fish and Wildlife Service wants to shoot as many wild ducks as it can find. (hawaiireporter.com)
  • But will killing our wild ducks help save the koloa, of which there are only about 3,000 left? (hawaiireporter.com)
  • Great to put on your eglu chicken coop etc. can be modified to suit the bird you keep eg duck etc etc. (ebay.co.uk)
  • In its stronghold along the Atlantic Coast it is a hardy bird, wintering farther north than most dabbling ducks. (audubon.org)
  • Each map is a visual guide to where a particular bird species may find the climate conditions it needs to survive in the future. (audubon.org)
  • Several endoparasitic cestodes including Hymenolepis javanensis and Cittotaenia sandgroundi have been described from lesser whistling duck hosts apart from ectoparasitic bird lice and mites . (wikipedia.org)
  • The beautiful Burdekin duck is just one of the many bird species that call Australia Zoo home. (australiazoo.com.au)
  • The migratory bird species protected by the Act are listed in 50 CFR 10.13. (fws.gov)
  • This long-lived bird is a White River National Forest Sensitive Species due to its small breeding population in the Flat Tops. (vaildaily.com)
  • This RRT team will cull the bird flu affected ducks in an isolated places and this RRT team will complete their works within four days. (flutrackers.com)
  • Did you know ducks have probably the most interesting genitals of all bird species? (wired.com)
  • The anatomy of ducks is especially bizarre considering that 97 percent of all bird species have no phallus at all. (wired.com)
  • These assays detected four important bird groups contributing to fecal contamination of waterways: gulls, geese, ducks, and chickens. (asm.org)
  • The following checklist is compiled from the Hornsby Bend Bird Sightings Database, and contains all species known to have occured through July 1999. (angelfire.com)
  • Comprehensive life histories for all bird species and families. (ebird.org)
  • Fourteen observers spent 21.5 hours and covered 68 miles and saw 9 bird species totaling 325 birds throughout the day. (nps.gov)
  • Long term monitoring has shown population declines in nearly 40% of the most common marine bird species (including seabirds, sea ducks, and shorebirds) that overwinter in the Salish Sea. (epa.gov)
  • Colin Basler] Many different bird species can harbor Salmonella in their intestines. (cdc.gov)
  • I found this: "female ducks, once they reach egg-laying age, develop freckles on their bills, while male ducks have bare bills throughout their lives. (wordpress.com)
  • However, if darker coloring (via freckles) is something female ducks can develop over time, then IMO it very well could be the same duck. (wordpress.com)
  • We amend the regulations to prohibit sale, transfer, or propagation of muscovy ducks for hunting and any other purpose other than food production, and to allow their removal in locations in which the species does not occur naturally in the contiguous United States, Alaska, and Hawaii, and in U.S. territories and possessions. (federalregister.gov)
  • We just made the muscovy ducks their own run and shelter. (backyardchickens.com)
  • One small population of Musk Ducks in Victoria (Lake Wendouree) differed from both Kangaroo Island and the remainder of mainland eastern Australia, possibly due to genetic drift exacerbated by inbreeding and small population size. (springer.com)
  • Schuster says conservationists need to look at genetic diversity when they assess a species' wellbeing. (newscientist.com)
  • In fact they were genetic sitting ducks, says Schuster. (newscientist.com)
  • The IUCN doesn't require its scientists to do genetic testing on species they are assessing, although the information is used if they do. (newscientist.com)
  • We demonstrate that hybridisation has led to sustained exchange of genetic material between duck species on an evolutionary time scale without disintegrating species boundaries. (beds.ac.uk)
  • Even though behavioural, genetic and ecological factors uphold species boundaries in ducks, we detect opposing forces allowing for viable interspecific hybrids, with long-term evolutionary implications. (beds.ac.uk)
  • By reviewing evidence from speciation theory, palaeogeography and palaeontology we propose a fundamentally new model of speciation to accommodate our genetic findings in dabbling ducks. (beds.ac.uk)
  • If introgression of genetic material of one species into another occurs regularly enough in the absence of genomic incompatibility, one would expect that these events oppose genetic drift by exchange of alleles that the two subsequently will have in common. (beds.ac.uk)
  • Wild crop species, for example, maintain genetic diversity of agricultural crops that can adapt to a changing climate and ensure food and nutritional security. (iucn.org)
  • Gadwall and bluewing teal were the next-most prominent species in the open-day haul on these public lands. (houmatoday.com)
  • It has a chestnut rump, differentiating it from its larger relative, the fulvous whistling duck , which has a creamy white rump. (wikipedia.org)
  • This chestnut brown duck is confusable only with the fulvous whistling duck ( D. bicolor ) but has chestnut upper-tail coverts unlike the creamy white in the latter. (wikipedia.org)
  • Ducks experimentally infected with viruses isolated between 2003 and 2004 shed virus for an extended time (up to 17 days), during which variant viruses with low pathogenicity were selected. (pnas.org)
  • The American Black Duck is a common migrant and winter resident across Tennessee, with just a few scattered breeding pairs in the state. (tn.gov)
  • The oldest known American Black Duck in the wild was 26 years, 5 months old. (tn.gov)
  • The species was near extinction at the beginning of the 20th century, but the population increased to 500 individuals in 1987 (Marshall 1992), following the removal of introduced rabbits from Laysan. (birdlife.org)
  • Learn about animals, including the latest animal news, advancements in animal health research, and updates on new species and extinction. (mnn.com)
  • However, the role of duck STING (DuSTING) in antiviral innate immunity, especially in anti-RNA virus infection, has yet to be elucidated. (frontiersin.org)
  • The ducks that are unaffected by infection with these viruses continue to circulate these viruses, presenting a pandemic threat. (pnas.org)
  • The above results indicate that XBT14-like velogenic gIX APMV-1 (such as XBT14, F48E8 and GD09-2) could cause fatal infection in duck, and genotype IX is a novel genotype that virulent to duck as well as genotype VII did. (allenpress.com)
  • It has been introduced in other locations, where it is considered an invasive species that sometimes creates problems through competition with native species, damage to property, and transmission of disease. (federalregister.gov)
  • Novel breeding opportunities arise when invasive species colonize new areas and interact with related local species. (nature.com)
  • From 1916-1941 the wood duck was given complete protection under the fed. (illinois.edu)
  • Male ducks respond to sexual competition by growing either an extra-long penis or a nub of flesh, a new study finds. (scientificamerican.com)
  • Patricia Brennan, an evolutionary biologist at Mount Holyoke College in South Hadley, Massachusetts, compared the penises of ducks kept in male-female pairs to those housed with multiple males per female. (scientificamerican.com)
  • Some male ducks, for example, have penises in the shape of corkscrews to navigate the labyrinth-like vaginas of their female counterparts. (scientificamerican.com)
  • It was formerly called "Oldsquaw," not politically correct by any measure, a reference to this "talkative" behavior -- although it is the male of this species that makes most of the noise. (audubon.org)
  • The male pink-headed duck is unmistakable when a good view is had. (wikipedia.org)
  • The male is called a drake and the female is called a duck or hen. (answers.com)
  • A drake is simply what male ducks - of any breed - are called. (answers.com)
  • Although most male birds have no penis , ducks have a long corkscrew penis, and the females have a long corkscrew vagina, which spirals in the opposite direction. (wikipedia.org)
  • Male mandarian ducks are among the most gorgeous birds in the world, but there's more to this species than good looks. (mnn.com)
  • Patterns of male bay ducks are generally more somber, consisting partially of black and/or dark red tones. (vaildaily.com)
  • Of the sea ducks, the tiny diver you just saw may be a male bufflehead, distinguished by its mostly white head and body, or a male goldeneye (common or Barrow's). (vaildaily.com)
  • So I went out, collected the duck, and before I put it in the freezer, I checked if the victim was indeed of the male sex. (ted.com)
  • The male duck exhibits a complex mating ritual. (kiwifoto.com)