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Alder Flycatcher
The alder flycatcher (''Empidonax alnorum'') is a small insect-eating bird of the tyrant flycatcher family. The genus name ''Empidonax'' is from Ancient Greek ''empis'', "gnat", and ''anax'', "master". The specific ''alnorum'' is Latin and means "of the alders". Description ''E. alnorum'' is one of the larger ''Empidonax'' species, attaining a length of , and a mass of . The wingspan ranges from . Upperparts of ''E. alnorum'' are dull greenish-olive. The crown is a slightly darker olive-green than the back. The throat is white, with a darker breast band. Thin white rings surround the eyes. The bill is wide and moderate in length, with pinkish or yellow-orange lower mandible and black upper mandible. Wings are generally black, with white wing bars and white edges of the innermost secondaries (tertials). Juveniles have brownish upperparts, yellow underparts, and yellowish brown or buff wingbars.All about birds nternet(2015). Ithaca (NY): Cornell University; pdated 2015; cited 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Brewster (ornithologist)
William Brewster (July 5, 1851 – July 11, 1919) was an American ornithologist, Natural history, naturalist, and Conservation movement, conservationist. He worked as a curator at the Museum of Comparative Zoology at Harvard University, co-founded the American Ornithologists' Union and the Nuttall Ornithological Club, and served as the first president of Massachusetts Audubon Society, Mass Audubon. Early life and education Childhood William Brewster was born on July 5, 1851, in South Reading (now Wakefield, Massachusetts, Wakefield), Massachusetts, the youngest of four children born to John Brewster, a successful Boston banker, and Rebecca Parker (Noyes). The couple settled in Cambridge, Massachusetts, Cambridge, Massachusetts in 1845. Brewster's sister and older brothers died in early childhood, inspiring Henry Wadsworth Longfellow, Longfellow, a close neighbor, to write the poem ''The Open Window''. Brewster attended Cambridge public schools, Washington Grammar School and Camb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mist Net
Mist nets are nets used to capture wild birds and bats. They are used by hunters and poachers to catch and kill animals, but also by ornithologists and chiropterologists for banding and other research projects. Mist nets are typically made of nylon or polyester mesh suspended between two poles, resembling a volleyball Volleyball is a team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules. It has been a part of the official program of the Summ ... net. When properly deployed in the correct habitat, the nets are virtually invisible. Mist nets have shelves created by horizontally strung lines that create a loose, baggy pocket. When a bird or bat hits the net, it falls into this pocket, where it becomes tangled. The mesh size of the netting varies according to the size of the species targeted for capture. Mesh sizes can be measured along one side of the edge o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meso-American Wintering Birds
Mesoamerica is a historical region and cultural area that begins in the southern part of North America and extends to the Pacific coast of Central America, thus comprising the lands of central and southern Mexico, all of Belize, Guatemala, El Salvador, and parts of Honduras, Nicaragua and northwestern part of Costa Rica. As a cultural area, Mesoamerica is defined by a mosaic of cultural traits developed and shared by its indigenous cultures. In the pre-Columbian era, many indigenous societies flourished in Mesoamerica for more than 3,000 years before the Spanish colonization of the Americas began on Hispaniola in 1493. In world history, Mesoamerica was the site of two historical transformations: (i) primary urban generation, and (ii) the formation of New World cultures from the mixtures of the indigenous Mesoamerican peoples with the European, African, and Asian peoples who were introduced by the Spanish colonization of the Americas. Mesoamerica is one of the six areas in the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Appalachia (United States)
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 furthe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of North America
The lists of birds in the light blue box below are divided by biological family. The lists are based on ''The AOS Check-list of North American Birds'' of the American Ornithological Society and ''The Clements Checklist of Birds of the World'' supplemented with checklists from Panama, Greenland, and Bermuda. It includes the birds of Greenland, Canada, the United States (excluding Hawaii), Mexico, Central America, Bermuda, and the West Indies. Taxonomy The taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the accompanying bird lists adheres to the conventions of the AOS's (2019) ''Check-list of North American Birds'', the recognized scientific authority on the taxonomy and nomenclature of North America birds. The AOS's Committee on Classification and Nomenclature, the body responsible for maintaining and updating the ''Check-list'', "strongly and unanimously continues to endorse the biological spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Canada
This is a list of bird species confirmed in Canada. Unless otherwise noted, the list is that of ''Bird Checklists of the World'' as of July 2022. Of the 704 species listed here, 236 are Vagrancy (biology), accidental. Twelve species were Introduced species, introduced to North America or directly to Canada, three species are Extinction, extinct, and three (possibly four) have been Local extinction, extirpated. One species of uncertain origin is also included. This list is presented in the taxonomic sequence of the ''Check-list of North and Middle American Birds'', 7th edition through the 63rd Supplement, published by the American Ornithological Society (AOS). Common and scientific names are also those of the ''Check-list'', except that the common names of families are from the Clements taxonomy because the AOS list does not include them. Canadian birds most closely resemble those of Eurasia, which was connected to the continent as part of the supercontinent Laurasia until aroun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Redlist
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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altricial
Precocial species in birds and mammals are those in which the young are relatively mature and mobile from the moment of birth or hatching. They are normally nidifugous, meaning that they leave the nest shortly after birth or hatching. Altricial species are those in which the young are underdeveloped at the time of birth, but with the aid of their parents mature after birth. These categories form a continuum, without distinct gaps between them. In fish, this often refers to the presence or absence of a stomach: precocial larvae have one at the onset of first feeding whereas altricial fish do not. Depending on the species, the larvae may develop a functional stomach during metamorphosis (gastric) or remain stomachless (agastric). Precociality Precocial young have open eyes, hair or down, large brains, and are immediately mobile and somewhat able to flee from or defend themselves against predators. For example, with ground-nesting birds such as ducks or turkeys, the young are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gleaning (birds)
Gleaning is a feeding strategy by birds and bats in which they catch invertebrate prey, mainly arthropods, by plucking them from foliage or the ground, from crevices such as rock faces and under the eaves of houses, or even, as in the case of ticks and lice, from living animals. This behavior is contrasted with Hawking (birds), hawking insects from the air or chasing after moving insects such as ants. Gleaning, in birds, does not refer to foraging for seeds or fruit. Gleaning is a common feeding strategy for some groups of birds, including nuthatches, Tit (bird), tits (including chickadees), wrens, Ovenbird (family), woodcreepers, treecreepers, Old World flycatchers, Tyrant flycatchers, Old World babbler, babblers, Old World warblers, New World warblers, Vireos and some hummingbirds and cuckoos. Many birds make use of multiple feeding strategies, depending on the availability of different sources of food and opportunities of the moment. Techniques and adaptations Foliage glea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawking (birds)
Hawking is a feeding strategy in birds involving catching flying insects in the air. The term usually refers to a technique of sallying out from a perch to snatch an insect and then returning to the same or a different perch, though it also applies to birds that spend almost their entire lives on the wing. This technique is called "flycatching" and some birds known for it are several Family (biology), families of "flycatchers": Old World flycatchers, monarch flycatchers, and tyrant flycatchers; however, some species known as "flycatchers" use other foraging methods, such as the grey tit-flycatcher. Other birds, such as Swift (bird), swifts, swallows, and nightjars, also take insects on the wing in continuous aerial feeding. The term "hawking" comes from the similarity of this behavior to the way Hawk, hawks take prey in flight, although, whereas Bird of prey, raptors may catch prey with their feet, hawking is the behavior of catching insects in the bill. Many birds have a combine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pewee
The pewees are a genus, ''Contopus'', of small to medium-sized insect-eating birds in the Tyrant flycatcher family Tyrannidae. These birds are known as pewees, from the call of one of the more common members of this vocal group. They are generally charcoal-grey birds with wing bars that live in wooded areas. The genus ''Contopus'' was introduced by the German ornithologist Jean Cabanis in 1855 with the eastern wood pewee as the type species. The name of the genus combines the Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ... words ''kontos'' "pole" or "shaft" and ''pous'' "foot". The genus contains 16 species: References External links * * Taxa named by Jean Cabanis {{Tyrannidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willow Flycatcher
The willow flycatcher (''Empidonax traillii'') is a small insect-eating, neotropical migrant bird of the tyrant flycatcher family native to North America. Taxonomy There are four subspecies recognized, all of which breed in North America (including three subspecies that breed in California). At one time, this bird and the alder flycatcher (''Empidonax alnorum'') were considered to be a single species, Traill's flycatcher. Their song is the only reliable method to tell them apart in the field. The binomial commemorates the Scottish zoologist Thomas Stewart Traill. Subspecies The subspecies are best distinguished from each other by their songs. In addition, the four subspecies have significant genetic differences based on mitochondrial DNA analysis. Their winter ranges have been elucidated using mitochondrial DNA genetic studies of 172 birds sampled in winter combined with plumage coloration and morphological differences. The four subspecies of the willow flycatcher are: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
