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Sawmill Creek
Sawmill Creek is a creek located in Ottawa, Ontario, Canada. It is a tributary of the Rideau River. It rises in the wetlands south and southwest of the community of Blossom Park in the Ottawa Greenbelt, specifically south of Lester Road. It flows roughly north by northwest through Blossom Park, and the neighbourhood of South Keys, through the McCarthy Woods, and then separates the neighbourhood of Riverside Park on the west from the neighbourhoods of Ellwood and Heron Park on the east, before entering the Rideau River at Billings Bridge, near the intersection of Bank Street and Riverside Drive. Physiology The creek's watershed is mainly marine clay plains with sand and rock ridges. 29% of the creek's substrate is clay, 21% is sand, while equal amounts (17%) are either cobble or silt. Accounting for the fact that the creek runs mostly though an urban environment, only 28% of the creek's path is natural, while 16% has been altered moderately, and 56% has been "highly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobble (geology)
A cobble (sometimes a cobblestone) is a clast of rock defined on the Udden–Wentworth scale as having a particle size of , larger than a pebble and smaller than a boulder. Other scales define a cobble's size differently. A rock made predominantly of cobbles is termed a conglomerate. Cobblestone is a building material based on cobbles. Etymology Cobbles, also called cobblestones, derive their name from the word cob, meaning a rounded lump. The term is further related to the German ', meaning ''head''. Chester Wentworth referred to cobbles as ''cobble bowlders'' in his 1922 paper that would become the basis for the Udden–Wentworth scale. Classifications Within the widely used Krumbein phi scale of grain sizes, cobbles are defined as clasts of rock ranging from −6 to −8 φ. This classification corresponds with the Udden–Wentworth size scale which defines cobbles as clasts with diameters from . On this scale, cobbles are larger than pebbles which measure in diameter a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grosbeak
Grosbeak is a form taxon containing various species of seed-eating passerine birds with large beaks. Although they all belong to the superfamily Passeroidea, these birds are not part of a natural group but rather a polyphyletic assemblage of distantly related songbirds. Some are cardueline finches in the family Fringillidae, while others are cardinals in the family Cardinalidae; one is a member of the weaver family Ploceidae. The word "grosbeak", first applied in the late 1670s, is a partial translation of the French ''grosbec'', where ''gros'' means "large" and ''bec'' means "beak". The following is a list of grosbeak species, arranged in groups of closely related genera. These genera are more closely related to smaller-billed birds than to other grosbeaks. Exceptions are the three genera of "typical grosbeak finches", which form a group of closest living relatives and might thus be considered the "true" grosbeaks. Grosbeak finches The finch family (Fringillidae) contains 13 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Blue Heron
The great blue heron (''Ardea herodias'') is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North America and Central America, as well as the Caribbean and the Galápagos Islands. It is a rare vagrant to coastal Spain, the Azores, and areas of far southern Europe. An all-white population found in south Florida and the Florida Keys is known as the great white heron. Debate exists about whether this represents a white color morph of the great blue heron, a subspecies of it, or an entirely separate species. The status of white individuals known to occur elsewhere in the Caribbean, and their existence is rarely found elsewhere besides in eastern North America. Taxonomy The great blue heron was one of the many species originally described by Carl Linnaeus in his 18th-century work, '' Systema Naturae''. The scientific name comes from Latin ''ardea'', and Ancient Greek (), both meaning "heron". The great blue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grackle
Grackles is the common name of any of 11 passerine birds (10 extant and one extinct) native to North and South America. They belong to various genera in the icterid family. In all the species with this name, adult males have black or mostly black plumage. Baby birds like to feed by screeching. * Genus ''Quiscalus'' ** Boat-tailed grackle, ''Quiscalus major'' ** Common grackle, ''Quiscalus quiscula'' ** Great-tailed grackle, ''Quiscalus mexicanus'' ** Nicaraguan grackle, ''Quiscalus nicaraguensis'' ** Greater Antillean grackle, ''Quiscalus niger'' ** Carib grackle, ''Quiscalus lugubris'' ** Slender-billed grackle, ''Quiscalus palustris'' - extinct (1910) * Genus '' Hypopyrrhus'' ** Red-bellied grackle, ''Hypopyrrhus pyrohypogaster'' * Genus '' Lampropsar'' ** Velvet-fronted grackle, ''Lampropsar tanagrinus'' * Genus '' Macroagelaius'' ** Golden-tufted grackle, ''Macroagelaius imthurni'' ** Colombian mountain grackle, ''Macroagelaius subalaris'' Sometimes members of the starli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Goldfinch
The American goldfinch (''Spinus tristis'') is a small North American bird in the finch family. It is migratory, ranging from mid-Alberta to North Carolina during the breeding season, and from just south of the Canada–United States border to Mexico during the winter. The only finch in its subfamily to undergo a complete molt, the American goldfinch displays sexual dichromatism: the male is a vibrant yellow in the summer and an olive color during the winter, while the female is a dull yellow-brown shade which brightens only slightly during the summer. The male displays brightly colored plumage during the breeding season to attract a mate. The American goldfinch is a granivore and adapted for the consumption of seedheads, with a conical beak to remove the seeds and agile feet to grip the stems of seedheads while feeding. It is a social bird and will gather in large flocks while feeding and migrating. It may behave territorially during nest construction, but this aggression is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Downy Woodpecker
The downy woodpecker (''Dryobates pubescens'') is a species of woodpecker, the smallest in North America. Length ranges from . Downy woodpeckers primarily live in forested areas throughout the United States and Canada, with the exception of deserts in the southwest and the northern tundra. The bird nests in tree cavities and feeds primarily on insects, although it supplements its diet with seeds and berries. The downy woodpecker is very similar in appearance to the hairy woodpecker, although they are not closely related. Taxonomy The downy woodpecker was described and illustrated with a hand-coloured plate by the English naturalist Mark Catesby in his ''The Natural History of Carolina, Florida and the Bahama Islands'', which was published between 1729 and 1732. When in 1766 the Swedish naturalist Carl Linnaeus updated his ''Systema Naturae'' for the twelfth edition, he included the downy woodpecker, coined the binomial name ''Picus pubescens'' and cited Catesby's book. The specif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crow
A crow is a bird of the genus ''Corvus'', or more broadly a synonym for all of ''Corvus''. Crows are generally black in colour. The word "crow" is used as part of the common name of many species. The related term "raven" is not pinned scientifically to any certain trait, but is rather a general grouping for larger ''Corvus spp.'' Species * ''Corvus albus'' – pied crow (Central African coasts to southern Africa) * ''Corvus bennetti'' – little crow (Australia) * ''Corvus brachyrhynchos'' – American crow (United States, southern Canada, northern Mexico) * ''Corvus capensis'' – Cape crow or Cape rook (Eastern and southern Africa) * ''Corvus cornix'' – hooded crow (Northern and Eastern Europe and Northern Africa and Middle East) * ''Corvus corone'' – carrion crow (Europe and eastern Asia) *''Corvus culminatus'' – Indian jungle crow (South Asia) * ''Corvus edithae'' – Somali crow or dwarf raven (eastern Africa) * ''Corvus enca'' – slender-billed crow (Malaysia, Born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cedar Waxwing
The cedar waxwing (''Bombycilla cedrorum'') is a member of the family Bombycillidae or waxwing family of passerine birds. It is a medium-sized, mostly brown, gray, and yellow. This bird is named for its wax-like wing tips. It is a native of North and Central America, breeding in open wooded areas in southern Canada and wintering in the southern half of the United States, Central America, and the far northwest of South America. Its diet includes cedar cones, fruit, holly berries, and insects. The cedar waxwing is listed as least concern on the IUCN Red List. The genus name ''Bombycilla'' comes from the Ancient Greek ''bombux'', "silk" and the Modern Latin ''cilla'', "tail"; this is a direct translation of the German ''Seidenschwanz'', "silk-tail", and refers to the silky-soft plumage of these birds. The specific ''cedrorum'' is Latin for "of the cedars". Description Cedar waxwings are medium-sized birds approximately long and weighing roughly . Wingspan ranges from 8.7-11.8 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catbird
Several unrelated groups of songbirds are called catbirds because of their wailing calls, which resemble a cat's meowing. The genus name ''Ailuroedus'' likewise is from the Greek for "cat-singer" or "cat-voiced". Australasian catbirds are the genera ''Ailuroedus'' and the monotypic ''Scenopooetes''. They belong to the bowerbird family (Ptilonorhynchidae) of the basal songbirds: * Ochre-breasted catbird (''Ailuroedus stonii'') * White-eared catbird (''Ailuroedus buccoides'') * Tan-capped catbird (''Ailuroedus geislerorum'') * Green catbird (''Ailuroedus crassirostris'') * Spotted catbird (''Ailuroedus melanotis'') * Huon catbird (''Ailuroedus astigmaticus'') * Black-eared catbird (''Ailuroedus melanotis'') * Arfak catbird (''Ailuroedus arfakianus'') * Northern catbird (''Ailuroedus jobiensis'') New World catbirds are two monotypic genera from the mimid family (Mimidae) of the passeridan superfamily Muscicapoidea. Among the Mimidae, they represent independent basal lineages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Cardinal
The northern cardinal (''Cardinalis cardinalis'') is a bird in the genus ''Cardinalis''; it is also known colloquially as the redbird, common cardinal, red cardinal, or just cardinal (which was its name prior to 1985). It can be found in southeastern Canada, through the eastern United States from Maine to Minnesota to Texas, New Mexico, southern Arizona, southern California, and south through Mexico, Belize, and Guatemala. It is also an introduced species in a few locations such as Bermuda and Hawaii. Its habitat includes woodlands, gardens, shrublands, and wetlands. The northern cardinal is a mid-sized songbird with a body length of . It has a distinctive crest on the head and a mask on the face which is black in the male and gray in the female. The male is a vibrant red, while the female is a reddish olive color. The northern cardinal is mainly granivorous, but also feeds on insects and fruit. The male behaves territorially, marking out his territory with song. During courtshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada Goose
The Canada goose (''Branta canadensis''), or Canadian goose, is a large wild goose with a black head and neck, white cheeks, white under its chin, and a brown body. It is native to the arctic and temperate regions of North America, and it is occasionally found during migration across the Atlantic in northern Europe. It has been introduced to the United Kingdom, Ireland, Finland, Sweden, Denmark, New Zealand, Japan, Chile, Argentina, and the Falkland Islands. Like most geese, the Canada goose is primarily herbivorous and normally migratory; often found on or close to fresh water, the Canada goose is also common in brackish marshes, estuaries, and lagoons. Extremely adept at living in human-altered areas, Canada geese have established breeding colonies in urban and cultivated habitats, which provide food and few natural predators. The success of this common park species has led to its often being considered a pest species because of its excrement, its depredation of crops, its n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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