Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Bird> ?p ?o }
- Bird abstract "Birds (class Aves) are a group of endothermic vertebrates, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines, sometimes known as perching birds or, less accurately, as songbirds.Scientific consensus is that birds are the last surviving lineage of dinosaurs, having evolved from feathered dinosaur ancestors within the theropod group of saurischian dinosaurs. The fossil record indicates that true birds first appeared during the Cretaceous period, around 100 million years ago. However, primitive bird-like "stem-birds" that lie outside class Aves proper, in the group Avialae, have been found dating back to the mid-Jurassic period. Many of these early stem-birds, such as Archaeopteryx, were not yet capable of fully powered flight, and many retained primitive characteristics like toothy jaws in place of beaks and long bony tails.Birds have more or less developed wings; the only known groups without wings are the extinct moa and elephant birds. Bird wings, which evolved from forelimbs, enabled birds the ability of bird flight. The digestive and respiratory systems of birds are also uniquely adapted for flight, although further speciation has led to some flightless birds, including ratites, penguins, and diverse endemic island species of birds. Some bird species of aquatic environments, particularly the aforementioned flightless penguins, and also members of the duck family, have also evolved for swimming. Birds, specifically Darwin's finches, played an important part in the inception of Darwin's theory of evolution by natural selection.Some birds, especially corvids and parrots, are among the most intelligent animals; several bird species make and use tools, and many social species pass on knowledge across generations, which is considered a form of culture. Many species annually migrate great distances. Birds are social, communicating with visual signals, calls, and bird songs, and participating in such social behaviours as cooperative breeding and hunting, flocking, and mobbing of predators. The vast majority of bird species are socially monogamous, usually for one breeding season at a time, sometimes for years, but rarely for life. Other species have polygynous ("many females") or, rarely, polyandrous ("many males") breeding systems. Birds produce offspring by laying eggs which are fertilized through sexual reproduction. They are usually laid in a nest and incubated by the parents. Most birds have an extended period of parental care after hatching. Some birds, such as hens, lay eggs even when not fertilized, though unfertilized eggs do not produce offspring.Many species of birds are economically important. Domesticated and undomesticated birds (poultry and game) are important sources of eggs, meat, and feathers. Songbirds, parrots, and other species are popular as pets. Guano (bird excrement) is harvested for use as a fertilizer. Birds prominently figure throughout human culture. About 120–130 species have become extinct due to human activity since the 17th century, and hundreds more before then. Human activity threatens about 1,200 bird species with extinction, though efforts are underway to protect them. Recreational birdwatching is an important part of the ecotourism industry.".
- Bird soundRecording Bird__1.
- Bird thumbnail Bird_Diversity_2013.png?width=300.
- Bird wikiPageExternalLink ibc.lynxeds.com.
- Bird wikiPageExternalLink bix-idx?c=bix;cc=bix;sid=0c4f6243857204b94fcdebc6dce5d8b2;type=simple;page=browse;inst=bix_10;sort=region.
- Bird wikiPageExternalLink birdbiogeography1.htm.
- Bird wikiPageExternalLink sora.unm.edu.
- Bird wikiPageExternalLink index.html.
- Bird wikiPageExternalLink www.birdlife.org.
- Bird wikiPageExternalLink www.birdpop.org.
- Bird wikiPageExternalLink www.birds.cornell.edu.
- Bird wikiPageExternalLink birdsindex.htm.
- Bird wikiPageExternalLink www.ornithology.com.
- Bird wikiPageExternalLink birdidentifier.
- Bird wikiPageExternalLink completed_essays.html.
- Bird wikiPageExternalLink .U8ArB_ldWCl.
- Bird wikiPageID "3410".
- Bird wikiPageLength "164935".
- Bird wikiPageOutDegree "819".
- Bird wikiPageRevisionID "682315019".
- Bird wikiPageWikiLink Accipitrimorphae.
- Bird wikiPageWikiLink Adaptation.
- Bird wikiPageWikiLink Aepyornithiformes.
- Bird wikiPageWikiLink Aequornithes.
- Bird wikiPageWikiLink Afroaves.
- Bird wikiPageWikiLink Agriculture.
- Bird wikiPageWikiLink Airfoil.
- Bird wikiPageWikiLink Alaska.
- Bird wikiPageWikiLink Albatross.
- Bird wikiPageWikiLink Albatross_(metaphor).
- Bird wikiPageWikiLink Alpha_taxonomy.
- Bird wikiPageWikiLink Altitudinal_migration.
- Bird wikiPageWikiLink Altricial.
- Bird wikiPageWikiLink Ambush_predation.
- Bird wikiPageWikiLink Ambush_predator.
- Bird wikiPageWikiLink American_flamingo.
- Bird wikiPageWikiLink Ammonia.
- Bird wikiPageWikiLink Amniote.
- Bird wikiPageWikiLink Amniotic_egg.
- Bird wikiPageWikiLink Anatidae.
- Bird wikiPageWikiLink Anatinae.
- Bird wikiPageWikiLink Anchiornis.
- Bird wikiPageWikiLink Anchiornis_huxleyi.
- Bird wikiPageWikiLink Ancient_Egypt.
- Bird wikiPageWikiLink Ancient_Rome.
- Bird wikiPageWikiLink Ancient_murrelet.
- Bird wikiPageWikiLink Animal_cognition.
- Bird wikiPageWikiLink Animal_communication.
- Bird wikiPageWikiLink Animal_lead_poisoning.
- Bird wikiPageWikiLink Animal_track.
- Bird wikiPageWikiLink Annas_hummingbird.
- Bird wikiPageWikiLink Anseriformes.
- Bird wikiPageWikiLink Anserimorphae.
- Bird wikiPageWikiLink Antarctica.
- Bird wikiPageWikiLink Antimicrobial.
- Bird wikiPageWikiLink Anting_(bird_activity).
- Bird wikiPageWikiLink Aorta.
- Bird wikiPageWikiLink Aortic_arches.
- Bird wikiPageWikiLink Apterygiformes.
- Bird wikiPageWikiLink Aquatic_locomotion.
- Bird wikiPageWikiLink Arboreal.
- Bird wikiPageWikiLink Arboreal_locomotion.
- Bird wikiPageWikiLink Archaeopteryx.
- Bird wikiPageWikiLink Archaeorhynchus.
- Bird wikiPageWikiLink Archosaur.
- Bird wikiPageWikiLink Archosauria.
- Bird wikiPageWikiLink Asio.
- Bird wikiPageWikiLink Atlantic_puffin.
- Bird wikiPageWikiLink Atrioventricular_valves.
- Bird wikiPageWikiLink Atrium_(heart).
- Bird wikiPageWikiLink Augur.
- Bird wikiPageWikiLink Auk.
- Bird wikiPageWikiLink Auks.
- Bird wikiPageWikiLink Auricle_(anatomy).
- Bird wikiPageWikiLink Aurornis.
- Bird wikiPageWikiLink Aurornis_xui.
- Bird wikiPageWikiLink Austinornis_lentus.
- Bird wikiPageWikiLink Austral_snipe.
- Bird wikiPageWikiLink Australaves.
- Bird wikiPageWikiLink Australian_brushturkey.
- Bird wikiPageWikiLink Australian_magpie.
- Bird wikiPageWikiLink Avebrevicauda.
- Bird wikiPageWikiLink Avemetatarsalia.
- Bird wikiPageWikiLink Avialae.
- Bird wikiPageWikiLink Avian_ecology_field_methods.
- Bird wikiPageWikiLink Avian_influenza.
- Bird wikiPageWikiLink Avian_lead_poisoning.
- Bird wikiPageWikiLink Avian_range_expansion.
- Bird wikiPageWikiLink Aviculture.
- Bird wikiPageWikiLink Avifilopluma.
- Bird wikiPageWikiLink Avivore.
- Bird wikiPageWikiLink Bacteria.
- Bird wikiPageWikiLink Bar-tailed_godwit.
- Bird wikiPageWikiLink Bar-throated_minla.
- Bird wikiPageWikiLink Barn_swallow.
- Bird wikiPageWikiLink Basal_(phylogenetics).
- Bird wikiPageWikiLink Beak.
- Bird wikiPageWikiLink Bee_hummingbird.
- Bird wikiPageWikiLink Billing_(birds).
- Bird wikiPageWikiLink Binocular_vision.