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Little Blue Heron
The little blue heron (''Egretta caerulea'') is a small heron of the genus '' Egretta''. It is a small, darkly colored heron with a two-toned bill. Juveniles are entirely white, bearing resemblance to the snowy egret. During the breeding season, adults develop different coloration on the head, legs, and feet. They have a range that encompasses much of the Americas, from the United States to northern South America. Some populations are migratory. They can be found in both saltwater and freshwater ecosystems. Their preference for either one depends on where they live. Nesting behaviors are documented by numerous sources. The adults build nests in trees, in colonies with other bird species. The number of eggs laid varies from place to place. The young mature quickly, requiring little attention from adults after about nineteen days of age. Both young and adults are sometimes preyed on by other species. Adults hunt fish, crabs, and other small animals. As with clutch sizes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scarborough Marsh
Scarborough Marsh is a 3,200-acre saltwater marsh owned by the state of Maine and managed by the state's Department of Inland Fisheries and Wildlife as a wildlife management area. It is situated in southern Maine, in the town of Scarborough, Maine, Scarborough, in Cumberland County, Maine, Cumberland County. About Known as the largest saltwater marsh in the world, the marsh is fed by four rivers and several creeks. Three of the rivers in the Scarborough Marsh feed into and create the Scarborough River, which flows into Saco Bay (Maine), Saco Bay and the Gulf of Maine. The main waterways in the marsh are the Libby River, Nonesuch River, Dunstan River, Scarborough River, Jones Creek, Mill Brook, Phillips Brook, Finnerd Brook, and Cascade Brook. There are many other minor creeks that feed the main waterways. Salt marshes filter pollution from the water and provide food and shelter for numerous species of birds, fish, mammals, and shellfish. Given the wildlife productivity and habi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heavy Metals
upright=1.2, Crystals of lead.html" ;"title="osmium, a heavy metal nearly twice as dense as lead">osmium, a heavy metal nearly twice as dense as lead Heavy metals is a controversial and ambiguous term for metallic elements with relatively high density, densities, atomic weights, or atomic numbers. The criteria used, and whether metalloids are included, vary depending on the author and context and it has been argued that the term "heavy metal" should be avoided. A heavy metal may be defined on the basis of density, atomic number or chemical behaviour. More specific definitions have been published, none of which have been widely accepted. The definitions surveyed in this article encompass up to 96 out of the 118 known chemical elements; only mercury, lead and bismuth meet all of them. Despite this lack of agreement, the term (plural or singular) is widely used in science. A density of more than 5 g/cm3 is sometimes quoted as a commonly used criterion and is used in the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maroon
Maroon ( , ) is a brownish crimson color that takes its name from the French word , meaning chestnut. ''Marron'' is also one of the French translations for "brown". Terms describing interchangeable shades, with overlapping RGB ranges, include burgundy, claret, mulberry, and crimson. Different dictionaries define maroon differently. The ''Cambridge English Dictionary'' defines maroon as a dark reddish-purple color while its "American Dictionary" section defines maroon as dark brown-red. Lexico online dictionary defines maroon as a brownish-red. Similarly, Dictionary.com defines maroon as a dark brownish-red. The ''Shorter Oxford English Dictionary'' describes maroon as "a brownish-crimson or claret colour," while the Merriam-Webster online dictionary simply defines it as a dark red. In the sRGB color model for additive color representation, the web color called maroon is created by turning down the brightness of pure red to about one half. It is also noted that maroo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black-crowned Night Heron
The black-crowned night heron (''Nycticorax nycticorax'') r black-capped night heron commonly shortened to just night heron in Eurasia, is a medium-sized heron found throughout a large part of the world, including parts of Europe, Asia, and North and South America. In Australasia it is replaced by the closely related Nankeen night heron (''N. caledonicus''), with which it has hybridised in the area of contact. Taxonomy and name The black-crowned night heron was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae''. He placed it with herons, cranes and egrets in the genus '' Ardea'' and coined the binomial name ''Ardea nycticorax'', based on specimens from southern Europe. It is now placed in the genus '' Nycticorax'' that was described in 1817 by the English naturalist Thomas Forster for this species. The epithet ''nycticorax'' is from Ancient Greek and combines , meaning "night" and meaning "raven". The word was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Egret
The little egret (''Egretta garzetta'') is a species of small heron in the family Ardeidae. It is a white bird with a slender black beak, long black legs and, in the western race, yellow feet. As an aquatic bird, it feeds in shallow water and on land, consuming a variety of small creatures. It breeds colonially, often with other species of water birds, making a platform nest of sticks in a tree, bush or reed bed. A clutch of three to five bluish-green eggs is laid and incubated by both parents for about three weeks. The young fledge at about six weeks of age. Its breeding distribution is in wetlands in warm temperate to tropical parts of Asia, Africa, Australia, and Europe. A successful colonist, its range has gradually expanded north, with stable and self-sustaining populations now present in the United Kingdom. In warmer locations, most birds are permanent residents; northern populations, including many European birds, migrate to Africa and southern Asia to over-winter there ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybridization (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morpholo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cattle Egret
The cattle egret (formerly genus ''Bubulcus'') is a cosmopolitan distribution, cosmopolitan clade of heron (family (biology), family Ardeidae) in the genus ''Ardea (genus), Ardea'' found in the tropics, subtropics, and warm-temperate zones. According to the International Ornithologists' Union, IOC bird list, it contains two species, the western cattle egret and the eastern cattle egret, although some authorities regard them as a single species. Despite the similarities in plumage to the egrets of the genus ''Egretta'', it actually belongs to the genus ''Ardea (genus), Ardea''. Originally native to parts of Asia, Africa, and Europe, it has undergone a rapid expansion in its range (biology), distribution and successfully Colonisation (biology), colonised much of the rest of the world in the last century. They are white birds adorned with buff feather, plumes in the breeding season. They nest in bird colony, colonies, usually near bodies of water and often with other wading birds. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Dakota
North Dakota ( ) is a U.S. state in the Upper Midwest, named after the indigenous Dakota people, Dakota and Sioux peoples. It is bordered by the Canadian provinces of Saskatchewan and Manitoba to the north and by the U.S. states of Minnesota to the east, South Dakota to the south, and Montana to the west. North Dakota is part of the Great Plains region, characterized by broad prairies, steppe, temperate savanna, badlands, and farmland. North Dakota is the List of U.S. states and territories by area, 19th-largest state by area, but with a population of just under 800,000, the List of U.S. states and territories by population, fourth-least populous and List of U.S. states by population density, fourth-least densely populated. The List of capitals in the United States, state capital is Bismarck, North Dakota, Bismarck and the List of cities in North Dakota, most populous city is Fargo, North Dakota, Fargo, which accounts for nearly a fifth of the state's population; both cities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avibase
Avibase is an online taxonomic database that organizes bird taxonomic and distribution data globally. The database relies on the notion of taxonomic concepts rather than taxonomic names. Avibase incorporates and organizes taxonomic data from the main avian taxonomic publishers (''The Clements Checklist of Birds of the World'', ''Handbook of the Birds of the World'', BirdLife International, IOC Checklist and the ''Howard and Moore Complete Checklist of the Birds of the World'') and other regional sources (e.g. all editions of the '' American Ornithological Society Checklist of North American Birds'' since 1886). Taxonomic concepts in over 230 different taxonomic sources have been mapped and cross-referenced to Avibase concepts. The website also offers checklists for more than 20,000 geographic regions of the world, species pages with taxonomic information and synonyms, and tools for observers to maintain their own sightings and obtain reports, such as a map showing countries or eB ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceania
Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its continental landmass. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, at the centre of the land and water hemispheres, water hemisphere, Oceania is estimated to have a land area of about and a population of around 46.3 million as of 2024. Oceania is the smallest continent in land area and the list of continents and continental subregions by population, second-least populated after Antarctica. Oceania has a diverse mix of economies from the developed country, highly developed and globally competitive market economy, financial markets of Australia, French Polynesia, Hawaii, New Caledonia, and New Zealand, which rank high in quality of life and Human Development Index, to the much least developed countries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asia
Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilisations. Its 4.7 billion people constitute roughly 60% of the world's population. Asia shares the landmass of Eurasia with Europe, and of Afro-Eurasia with both Europe and Africa. In general terms, it is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a social constructionism, historical and cultural construct, as there is no clear physical and geographical separation between them. A commonly accepted division places Asia to the east of the Suez Canal separating it from Africa; and to the east of the Turkish straits, the Ural Mountains an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
