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Nuttall's Woodpecker
Nuttall's woodpecker (''Dryobates nuttallii'') is a species of woodpecker named after naturalist Thomas Nuttall in 1843. They are found in oak woodlands of California and are similar to the ladder-backed woodpecker in both genetics and appearance. Description Nuttall's woodpecker has black wings and tail feathers with white barring. On the ventral surface, color is white with black spots and barring. It has a black forehead with white streaks on the sides and an unbarred black region at the top of the back. Adult males have a distinguishable red crown which females do not. However, this physical feature is present in the juvenile of both sexes. They have zygodactyl feet and stiff tail feathers which allows them to maintain a vertical position on trees; typical of woodpeckers. The mass of the Nuttall's woodpecker ranges from , with a body length of . Taxonomy The Nuttall's woodpecker is closely related to the ladder-backed woodpecker of Arizona, New Mexico, Texas, and Mexico. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The IUCN Red List Of Threatened Species
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological species. A series of Regional Red Lists, which assess the risk of extinction to species within a political management unit, are also produced by countries and organizations. The goals of the Red List are to provide scientifically based information on the status of species and subspecies at a global level, to draw attention to the magnitude and importance of threatened biodiversity, to influence national and international policy and decision-making, and to provide information to guide actions to conserve biological diversity. Major species assessors include BirdLife International, the Institute of Zoology (the research division of the Zoological Society of London), the World Conservation Monitoring Centre, and many Specialist Groups within th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood Borer
The term woodboring beetle encompasses many species and families of beetles whose larval or adult forms eat and destroy wood (i.e., are xylophagous). In the woodworking industry, larval stages of some are sometimes referred to as woodworms. The three most species-rich families of woodboring beetles are Cerambycidae, longhorn beetles, Curculionidae, bark beetles and weevils, and Buprestidae, metallic flat-headed borers. Woodboring is thought to be the ancestral ecology of beetles, and bores made by beetles in fossil wood extend back to the earliest fossil record of beetles in the Early Permian (Asselian), around 295-300 million years ago. Ecology Woodboring beetles usually attack dying or dead trees. In forest settings, they are important in the turnover of trees by culling weak trees, thus allowing new growth to occur. They are also important as primary decomposers of trees within forest systems, allowing for the recycling of nutrients locked away in the relatively decay-resilient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of The California Chaparral And Woodlands
Fauna (: faunae or faunas) is all of the animal life present in a particular region or time. The corresponding terms for plants and fungi are ''flora'' and '' funga'', respectively. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zoologists and paleontologists use ''fauna'' to refer to a typical collection of animals found in a specific time or place, e.g. the "Sonoran Desert fauna" or the "Burgess Shale fauna". Paleontologists sometimes refer to a sequence of faunal stages, which is a series of rocks all containing similar fossils. The study of animals of a particular region is called faunistics. Etymology ''Fauna'' comes from the name Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns. All three words are cognates of the name of the Greek god Pan, and ''panis'' is the Modern Greek equivalent of fauna (πανίς or rather πανίδα). ''Fauna'' is also the word for a bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryobates
''Dryobates'' is a genus of birds in the woodpecker family Picidae. The species are widely distributed and occur in both Eurasia and the Americas. Taxonomy The genus ''Dryobates'' was named by the German naturalist Friedrich Boie in 1826 with the downy woodpecker (''Dryobates pubescens'') as the type species. The genus name ''Dryobates'' is from the Greek compound word δρυο-βάτης : 'woodland walker'; from : ''drus'' (genitive : ''dryós'') meaning woodland and : ''-bátēs'' meaning walker. In the ''eBird/Clements Checklist of Birds of the World'', the genus ''Dryobates'' is expanded to include all the species in ''Leuconotopicus ''Leuconotopicus'' is a genus of woodpeckers in the Family (biology), family Picidae native to North America, North and South America. Taxonomy The genus was erected by the French ornithologist Alfred Malherbe in 1845 with Strickland's woodpecke ...'' and '' Veniliornis''. The genus contains the following species: Refere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Described In 1843
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the common ostrich. There are over 11,000 living species and they are split into 44 orders. More than half are passerine or "perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have furth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picoides Nuttallii -Olive View, Sylmar, California, USA -male-8
''Picoides'' is a genus of woodpeckers (family Picidae) that are native to Eurasia and North America, commonly known as three-toed woodpeckers. Taxonomy The genus ''Picoides'' was introduced by the French naturalist Bernard Germain de Lacépède in 1799. The type species was subsequently designated as the Eurasian three-toed woodpecker (''Picoides tridactylus'') by the English zoologist George Robert Gray in 1840. The genus name combines the Latin ''Picus'' for a woodpecker and the Greek ''-oidēs'' meaning "resembling". The genus ''Picoides'' formerly contained around 12 species. In 2015 a molecular phylogenetic analysis of nuclear and mitochondrial DNA sequences from pied woodpeckers found that three existing genera (''Picoides'', ''Veniliornis'' and ''Dendropicos'') were polyphyletic. After the resurrection of five monophyletic genera and the subsequent rearrangement in which most of the former members of ''Picoides'' were moved to ''Leuconotopicus'' and ''Dryobates'', only t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogamy In Animals
Some animal species have a monogamous mating system, in which pairs bond to raise offspring. This is associated, usually implicitly, with sexual monogamy. Monogamous mating Monogamy is defined as a pair bond between two adult animals of the same species. This pair may cohabitate in an area or territory for some duration of time, and in some cases may copulate and reproduce with only each other. Monogamy may either be short-term, lasting one to a few seasons or long-term, lasting many seasons and in extreme cases, life-long. Monogamy can be partitioned into two categories, social monogamy and genetic monogamy which may occur together in some combination, or completely independently of one another.Ophir, Alexander G., Phelps, Steven M., Sorin, Anna Bess & O. Wolff, J. (2008)Social but not genetic monogamy is associated with greater breeding success in prairie voles/ref> As an example, in the cichlid species '' Variabilichromis moorii'', a monogamous pair will care for eggs and y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picoides Nuttallii Morro Bay
''Picoides'' is a genus of woodpeckers (family Picidae) that are native to Eurasia and North America, commonly known as three-toed woodpeckers. Taxonomy The genus ''Picoides'' was introduced by the French naturalist Bernard Germain de Lacépède in 1799. The type species was subsequently designated as the Eurasian three-toed woodpecker (''Picoides tridactylus'') by the English zoologist George Robert Gray in 1840. The genus name combines the Latin ''Picus'' for a woodpecker and the Greek ''-oidēs'' meaning "resembling". The genus ''Picoides'' formerly contained around 12 species. In 2015 a molecular phylogenetic analysis of nuclear and mitochondrial DNA sequences from pied woodpeckers found that three existing genera (''Picoides'', ''Veniliornis'' and ''Dendropicos'') were polyphyletic. After the resurrection of five monophyletic genera and the subsequent rearrangement in which most of the former members of ''Picoides'' were moved to ''Leuconotopicus'' and ''Dryobates'', only t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-breasted Sapsucker
The red-breasted sapsucker (''Sphyrapicus ruber'') is a medium-sized woodpecker of the forests of the west coast of North America. Taxonomy The red-breasted sapsucker was formally described in 1788 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's ''Systema Naturae''. He placed it with the woodpeckers in the genus ''Picus'' and coined the binomial name ''Picus ruber''. The specific epithet is Latin meaning "red". Gmelin based his description on the "red-breasted woodpecker" that had been described in 1782 by the English ornithologist John Latham in his ''A General Synopsis of Birds''. Latham mistakenly believed that his specimen had come from Cayenne in French Guiana. The type locality has been designated as Nootka Sound in the Canadian province of British Columbia. The red-breasted sapsucker is now one of four species placed in the genus '' Sphyrapicus'' that was introduced in 1858 by the American naturalist Spencer Baird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Sap
Sap is a fluid transported in the xylem cells (vessel elements or tracheids) or phloem sieve tube elements of a plant. These cells transport water and nutrients throughout the plant. Sap is distinct from latex, resin, or cell sap; it is a separate substance, separately produced, and with different components and functions. Honeydew (secretion), Insect honeydew is called sap, particularly when it falls from trees, but is only the remains of eaten sap and other plant parts. Types of sap Saps may be broadly divided into two types: xylem sap and phloem sap. Xylem sap Xylem sap (pronounced ) consists primarily of a watery solution of plant hormone, hormones, dietary mineral, mineral elements and other nutrients. Transport of sap in xylem is characterized by movement from the roots toward the leaf, leaves. Over the past century, there has been some controversy regarding the mechanism of xylem sap transport; today, most plant scientists agree that the cohesion-tension theory be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Click Beetle
Elateridae or click beetles (or "typical click beetles" to distinguish them from the related families Cerophytidae and Eucnemidae, which are also capable of clicking) are a family (biology), family of beetles. Other names include elaters, snapping beetles, spring beetles or skipjacks. This family was defined by William Elford Leach (1790–1836) in 1815. They are a cosmopolitan distribution, cosmopolitan beetle family characterized by the unusual click mechanism they possess. There are a few other families of Elateroidea in which a few members have the same mechanism, but most elaterid subfamilies can click. A spine on the prosternum can be snapped into a corresponding notch on the mesosternum, producing a violent "click" that can bounce the beetle into the air. The evolutionary purpose of this click is debated: hypotheses include that the clicking noise deters predators or is used for communication, or that the click may allow the beetle to "pop" out of the subtrate in which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larva
A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects, some arachnids, amphibians, or cnidarians typically have a larval phase of their life cycle. A larva's appearance is generally very different from the adult form (''e.g.'' caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different. In the case of smaller primitive arachnids, the larval stage differs by having three instead of four pairs of legs. Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population. Animals in the lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
