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Hen Harrier
Circus hudsonius The HEN HARRIER (Circus cyaneus) is a bird of prey . The genus name Circus is derived from Ancient Greek kirkos, meaning 'circle', referring to a bird of prey named for its circling flight. The specific cyaneus is Latin , meaning "dark-blue". While many taxonomic authorities split the northern harrier and the hen harrier into distinct species, others consider them conspecific. It breeds in northern Eurasia
Eurasia
. The term "hen harrier" refers to its former habit of preying on free-ranging fowl. It migrates to more southerly areas in winter. Eurasian birds move to southern Europe and southern temperate Asia, In the mildest regions, such as France, Great Britain
Great Britain

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Egg (biology)
An EGG is the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own; at which point the animal hatches. An egg results from fertilization of an ovum . Most arthropods , vertebrates , and mollusks lay eggs, although some, such as scorpions and most mammals , do not. Reptile eggs, bird eggs , and monotreme eggs are laid out of water, and are surrounded by a protective shell , either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e. breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark , and was 30 cm × 14 cm × 9 cm (11.8 in × 5.5 in × 3.5 in) in size. Whale shark
Whale shark
eggs typically hatch within the mother
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Swamp
A SWAMP is a wetland that is forested. Many swamps occur along large rivers where they are critically dependent upon natural water level fluctuations. Other swamps occur on the shores of large lakes. Some swamps have hammocks , or dry-land protrusions, covered by aquatic vegetation , or vegetation that tolerates periodic inundation. The two main types of swamp are "true" or swamp forests and "transitional" or shrub swamps . In the boreal regions of Canada, the word swamp is colloquially used for what is more correctly termed a bog or muskeg . The water of a swamp may be fresh water , brackish water or seawater . Some of the world's largest swamps are found along major rivers such as the Amazon , the Mississippi , and the Congo
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Marsh Harrier
The MARSH HARRIERS are birds of prey of the harrier subfamily. They are medium-sized raptors and the largest and broadest-winged harriers. Most of them are associated with marshland and dense reedbeds. They are found almost worldwide, excluding only the Americas
Americas
. Until recently two species were generally recognized: the marsh harrier (Circus aeruginosus) and the African marsh harrier (C. ranivorus). The marsh harrier is now usually split into several species, sometimes as many as six. These are the western marsh harrier (C. aeruginosus), eastern marsh harrier (C. spilonotus), Papuan harrier (C. spilonotus spilothorax or C. spilothorax), swamp harrier (C. approximans), Réunion harrier
Réunion harrier
(C. maillardi maillardi or C. maillardi) and Madagascar marsh harrier (C. maillardi macrosceles or C. macrosceles)
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Vagrancy (biology)
VAGRANCY is a phenomenon in biology whereby individual animals appear well outside their normal range ; individual animals which exhibit vagrancy are known as VAGRANTS. The term ACCIDENTAL is sometimes also used. There are a number of factors which might cause an individual to become a vagrant — genetic factors and weather conditions are two — but the causes are overall poorly understood. Vagrancy can be a precursor to colonisation if individuals survive. Vagrancy is known to occur in a wide range of animals such as birds , insects , mammals and sea turtles
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Scilly
The ISLES OF SCILLY (/ˈsɪli/ ; Cornish : Syllan or Enesek Syllan) are an archipelago off the southwestern tip of Cornwall
Cornwall
. One of the islands, St Agnes , is the most southerly point in both England
England
and the United Kingdom
United Kingdom
, being over 4 miles (6.4 km) further south than the most southerly point of the British mainland at Lizard Point . The population of all the islands at the 2011 census was 2,203. Scilly forms part of the ceremonial county of Cornwall
Cornwall
, and some services are combined with those of Cornwall. However, since 1890, the islands have had a separate local authority . Since the passing of the Isles of Scilly
Isles of Scilly
Order 1930, this authority has had the status of a county council and today is known as the Council of the Isles of Scilly
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Grassland
GRASSLANDS are areas where the vegetation is dominated by grasses ( Poaceae ), however sedge ( Cyperaceae ) and rush ( Juncaceae
Juncaceae
) families can also be found. Grasslands occur naturally on all continents except Antarctica
Antarctica
. Grasslands are found in most ecoregions of the Earth
Earth
. For example, there are five terrestrial ecoregion classifications (subdivisions) of the temperate grasslands, savannas, and shrublands biome (ecosystem ), which is one of eight terrestrial ecozones of the Earth's surface
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Marsh
A MARSH is a wetland that is dominated by herbaceous rather than woody plant species. Marshes can often be found at the edges of lakes and streams, where they form a transition between the aquatic and terrestrial ecosystems . They are often dominated by grasses, rushes or reeds. If woody plants are present they tend to be low-growing shrubs. This form of vegetation is what differentiates marshes from other types of wetland such as swamps , which are dominated by trees, and mires , which are wetlands that have accumulated deposits of acidic peat
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Bog
A BOG is a wetland that accumulates peat , a deposit of dead plant material—often mosses , and in a majority of cases, sphagnum moss . It is one of the four main types of wetlands . Other names for bogs include mire , quagmire, and muskeg ; alkaline mires are called fens . They are frequently covered in ericaceous shrubs rooted in the sphagnum moss and peat. The gradual accumulation of decayed plant material in a bog functions as a carbon sink . Bogs occur where the water at the ground surface is acidic and low in nutrients. In some cases, the water is derived entirely from precipitation , in which case they are termed ombrotrophic (rain-fed). Water flowing out of bogs has a characteristic brown colour, which comes from dissolved peat tannins . In general, the low fertility and cool climate results in relatively slow plant growth, but decay is even slower owing to the saturated soil. Hence peat accumulates. Large areas of landscape can be covered many metres deep in peat
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Prairie
PRAIRIES are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the dominant vegetation type. Temperate grassland regions include the Pampas of Argentina
Argentina
, southern Brazil
Brazil
and Uruguay
Uruguay
as well as the steppes of Eurasia
Eurasia
. Lands typically referred to as "prairie" tend to be in North America
North America
. The term encompasses the area referred to as the Interior Lowlands of Canada
Canada
, the United States
United States
, and Mexico
Mexico
, which includes all of the Great Plains as well as the wetter, somewhat hillier land to the east
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Farm
A FARM is an area of land that is devoted primarily to agricultural processes with the primary objective of producing food and other crops ; it is the basic facility in food production. The name is used for specialised units such as arable farms , vegetable farms, fruit farms, dairy , pig and poultry farms , and land used for the production of natural fibres , biofuel and other commodities . It includes ranches , feedlots , orchards , plantations and estates, smallholdings and hobby farms, and includes the farmhouse and agricultural buildings as well as the land. In modern times the term has been extended so as to include such industrial operations as wind farms and fish farms , both of which can operate on land or sea. Farming
Farming
originated independently in different parts of the world, as hunter gatherer societies transitioned to food production rather than, food capture
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Western Gulf Coastal Grasslands
The WESTERN GULF COASTAL GRASSLANDS are a subtropical grassland ecoregion of the southern United States
United States
and northeastern Mexico
Mexico
. It is known in Texas
Texas
as "COASTAL PRAIRIE" and as the TAMAULIPAN PASTIZAL in Mexico. CONTENTS * 1 Setting * 2 Flora * 3 Fauna * 4 Threats and preservation * 5 See also * 6 References SETTINGThe ecoregion covers an area of 77,425 km2 (29,894 sq mi), extending along the shore of the Gulf of Mexico
Mexico
from southeastern Louisiana (west of the Mississippi Delta ) through Texas
Texas
and into the Mexican state of Tamaulipas
Tamaulipas
as far as the Laguna Madre . Specific areas include a number of barrier islands , and the resacas or natural levees of the Laguna Madre. The coast is vulnerable to tropical storms that can seriously damage habitats
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Mammal
MAMMALS are any vertebrates within the class MAMMALIA (/məˈmeɪli.ə/ from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds ) by the possession of a neocortex (a region of the brain), hair , three middle ear bones and mammary glands . Females of all mammal species nurse their young with milk , secreted from the mammary glands. Mammals include the biggest animals on the planet, the great whales . The basic body type is a terrestrial quadruped , but some mammals are adapted for life at sea , in the air , in trees , underground or on two legs . The largest group of mammals, the placentals , have a placenta , which enables the feeding of the fetus during gestation. Mammals range in size from the 30–40 mm (1.2–1.6 in) bumblebee bat to the 30-meter (98 ft) blue whale . With the exception of the five species of monotreme (egg-laying mammals), all modern mammals give birth to live young
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Passerine
and see text DIVERSITY Roughly 100 families, around 5,400 species A PASSERINE is any bird of the order PASSERIFORMES, which includes more than half of all bird species. Passerines are distinguished from other orders of Aves by the arrangement of their toes, three pointing forward and one back, which facilitates perching. Sometimes known as perching birds or, less accurately, as songbirds , the passerines form one of the most diverse terrestrial vertebrate orders, with over 5,000 identified species . It has roughly twice as many species as the largest of the mammal orders, the Rodentia . It contains more than 110 families, the second-most of any order of tetrapods (after Squamata , the scaled reptiles). The passerines contain several groups of brood parasites such as the viduas , cuckoo-finches , and the cowbirds . Most passerines are omnivorous , while the shrikes are carnivorous
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Amphibian
AMPHIBIANS are ectothermic , tetrapod vertebrates of the class AMPHIBIA. Modern amphibians are all Lissamphibia
Lissamphibia
. They inhabit a wide variety of habitats , with most species living within terrestrial , fossorial , arboreal or freshwater aquatic ecosystems . Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs . Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed
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Frog
Archaeobatrachia Mesobatrachia