Relationships between bird familiesA juvenile Laughing Gull on the beach at Atlantic City.These redwing hatchlings are completely dependent on parental care.
Discover great deals on the many hard to find and one of a kind items available only on ebay!

This site contains sponsored affiliate links.

Bird

Birds are bipedal, warm-blooded, egg-laying vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. more...

Birds range in size from the tiny hummingbirds to the huge Ostrich and Emu. more...

HomeHome
AmphibianAmphibian
ArthropodArthropod
BirdBird
Blue JayBlue Jay
CardinalCardinal
DoveDove
FinchFinch
OstrichOstrich
PelicanPelican
PenguinPenguin
PigeonPigeon
CatCat
DinosaurDinosaur
DogDog
FishFish
MammalMammal
MythologicalMythological
ReptileReptile


Depending on taxonomic viewpoint, there are about 8,800–10,200 living bird species (plus about 120–130 that have become extinct in the span of human history) in the world, making them the most diverse class of terrestrial vertebrates.

Birds are a very differentiated class, with some feeding on nectar, plants, seeds, insects, rodents, fish, carrion, or other birds. Most birds are diurnal, or active during the day. Some birds, such as the owls and nightjars, are nocturnal or crepuscular (active during twilight hours). Many birds migrate long distances to utilise optimum habitats (e.g., Arctic Tern) while others spend almost all their time at sea (e.g. the Wandering Albatross). Some, such as frigatebirds, stay aloft for days at a time, even sleeping on the wing.

Common characteristics of birds include a bony beak with no teeth, the laying of hard-shelled eggs, high metabolic rate, and a light but strong skeletons. Most birds are characterised by flight, though the ratites are flightless, and several other species, particularly on islands, have also lost this ability. Flightless birds include the penguins, Ostrich, kiwi, and the extinct Dodo. Flightless species are vulnerable to extinction when humans or the mammals they introduce arrive in their habitat, for example the Great Auk, flightless rails, and the moa of New Zealand.

Bird orders

This is a list of the taxonomic orders in the class Aves. The list of birds gives a more detailed summary, including families.

  • Struthioniformes, Ostrich, emus, kiwis, and allies
  • Tinamiformes, tinamous
  • Anseriformes, waterfowl
  • Galliformes, fowl
  • Sphenisciformes, penguins
  • Gaviiformes, loons
  • Podicipediformes, grebes
  • Procellariiformes, albatrosses, petrels, and allies
  • Pelecaniformes, pelicans and allies
  • Ciconiiformes, storks and allies
  • Phoenicopteriformes, flamingos
  • Accipitriformes, eagles, hawks and allies
  • Falconiformes, falcons
  • Turniciformes, button-quail
  • Gruiformes, cranes and allies
  • Charadriiformes, plovers and allies
  • Pteroclidiformes, sandgrouse
  • Columbiformes, doves and pigeons
  • Psittaciformes, parrots and allies
  • Cuculiformes, cuckoos
  • Strigiformes, owls
  • Caprimulgiformes, nightjars and allies
  • Apodiformes, swifts
  • Trochiliformes, hummingbirds
  • Coraciiformes, kingfishers
  • Piciformes, woodpeckers and allies
  • Trogoniformes, trogons
  • Coliiformes, mousebirds
  • Passeriformes, passerines

Note: This is the traditional classification (the so-called Clements order). A more recent, radically different classification based on molecular data has been developed (the so-called Sibley order) and is gaining acceptance.

Evolution

Birds are generally considered to have evolved from theropod dinosaurs. Specifically, birds are members of Maniraptora, a group of theropods which includes dromaeosaurs and oviraptorids, among others. As more non-avian theropods that are closely related to birds are discovered, the formerly clear distinction between non-birds and birds becomes less so. Recent discoveries in North-east China (Liaoning Province) demonstrating that many small theropod dinosaurs had feathers contribute to this ambiguity.

The basal bird Archaeopteryx, from the Jurassic, is well-known as one of the first "missing links" to be found in support of evolution in the late 19th century. It remains the most primitive known bird. Other Mesozoic birds include the Confuciusornithidae, Enantiornithes, Ichthyornis, and Hesperornithiformes, a group of flightless divers resembling grebes and loons.

The recently discovered dromaeosaur, Cryptovolans, was capable of powered flight, contained a keel and had ribs with uncinate processes. In fact, Cryptovolans makes a better "bird" than Archaeopteryx which is missing some of these modern bird features. Because of this, some paleontologists have suggested that dromaeosaurs are actually basal birds whose larger members are secondarily flightless, i.e. dromaeosaurs evolved from birds and not the other way around. Evidence for this theory is currently inconclusive, but digs continue to unearth fossils (especially in China) of the strange feathered dromaeosaurs.

It should be noted that although ornithischian (bird-hipped) dinosaurs share the same hip structure as birds, birds actually originated from the saurischian (lizard-hipped) dinosaurs, and thus arrived at their hip structure condition independently. In fact, the bird-like hip structure developed a third time among a peculiar group of theropods, the Therizinosauridae.

Modern birds are classified in Neornithes, which are split into the Paleognathae and Neognathae. The paleognaths include the tinamous (found only in Central and South America) and the ratites. The ratites are large flightless birds, and include ostriches, cassowaries, kiwis and emus; some scientists suspect that the ratites represent an artificial grouping of birds which have independently lost the ability to fly, others contend that the ratites never had the ability to fly and are more directly related to the dinosaurs. The basal divergence from the remaining Neognathes was that of the Galloanseri, the superorder containing the Anseriformes (ducks, geese and swans), and the Galliformes (the pheasants, grouse, and their allies). See the chart.

The classification of birds is a contentious issue. Sibley & Ahlquist's Phylogeny and Classification of Birds (1990) is a landmark work on the classification of birds (although frequently debated and constantly revised). Evidence for the various orders seems to be fairly good, but the relationships between the orders are in a state of disarray. Evidence from modern bird anatomy, fossils and DNA have all been brought to bear on the problem but no strong consensus has emerged. See also: Sibley-Ahlquist taxonomy.

Read more at Wikipedia.org


[List your site here Free!]

Wooden Colored 60 Large Wood Blocks Bird Parrot Toys african grey cockatoo macawWooden Colored 60 Large Wood Blocks Bird Parrot Toys african grey cockatoo macaw $47.00 Economy Mix Wild Bird Feed, Value Bird Seed Blend, Dry, 20 lb. Bag 3 PackEconomy Mix Wild Bird Feed, Value Bird Seed Blend, Dry, 20 lb. Bag 3 Pack $34.99
3 Pack Owl to Keep Birds Away Decoy Scare Fake Owl Reflective Hanging Repellent3 Pack Owl to Keep Birds Away Decoy Scare Fake Owl Reflective Hanging Repellent $15.19 Bird Feeder ~ Amish Handmade Recycled Poly Hexagon ~ Green Cedar & White 5Lb UsaBird Feeder ~ Amish Handmade Recycled Poly Hexagon ~ Green Cedar & White 5Lb Usa $212.99
Bird Spikes,16 Pack Stainless Steel Bird Spikes, Bird Repellent Devices Outdoor,Bird Spikes,16 Pack Stainless Steel Bird Spikes, Bird Repellent Devices Outdoor, $25.68 Copper Patina Garden Heron Pair Metal Statues Bird Art Sculptures Crane 27.5"HCopper Patina Garden Heron Pair Metal Statues Bird Art Sculptures Crane 27.5"H $129.90
New ListingEastern Blue Yellow Birds on a Tree Figurine Statue FigureNew ListingEastern Blue Yellow Birds on a Tree Figurine Statue Figure $12.99 5pcs Rusty Metal Bird Silhouette Decor Yard Garden Cut Bird Art Ornament5pcs Rusty Metal Bird Silhouette Decor Yard Garden Cut Bird Art Ornament $15.99
Vitofarma Supplement Fertility Bird 60Ml Increased Breeding Vitamin For BirdVitofarma Supplement Fertility Bird 60Ml Increased Breeding Vitamin For Bird $12.23 Blue Bird Folk Art Earrings Teardrop No Tarnishing Wood Bird Lover Watcher GiftBlue Bird Folk Art Earrings Teardrop No Tarnishing Wood Bird Lover Watcher Gift $12.95
Joan Rivers Birds On A Branch Brooch Gold Tone & Rhinestones 2 1/2" VgcJoan Rivers Birds On A Branch Brooch Gold Tone & Rhinestones 2 1/2" Vgc $29.99 Feathersnap Smart Bird Feeder with Ai Bird Identification & Hd Camera –.Feathersnap Smart Bird Feeder with Ai Bird Identification & Hd Camera –. $189.99
Ganz Bird Figurine Pick One Black/Tan, Bluebird, Rust Color 5 "x 2 1/2" x 1 1/2"Ganz Bird Figurine Pick One Black/Tan, Bluebird, Rust Color 5 "x 2 1/2" x 1 1/2" $5.21 Wooden Parrot Swing Toy with Bells Bird Climbing Ladder Hanging Bird Perch NewWooden Parrot Swing Toy with Bells Bird Climbing Ladder Hanging Bird Perch New $10.99
Owl to Keep Birds Away, 3 Pack Bird Scare Owl Fake Owl, Reflective Hanging BirdOwl to Keep Birds Away, 3 Pack Bird Scare Owl Fake Owl, Reflective Hanging Bird $9.95 Vtg Rare Oiva Toikka iittala Yellow Grouse Bird. Mouth-blown. Issued In 2014.Vtg Rare Oiva Toikka iittala Yellow Grouse Bird. Mouth-blown. Issued In 2014. $435.00
Economy Mix Wild Bird Feed, Value Bird Seed Blend, Dry, 20 lb. BagEconomy Mix Wild Bird Feed, Value Bird Seed Blend, Dry, 20 lb. Bag $8.30 to Pair of Birds with Nest and Hatchlings Handmade Miniature Vintage 70sPair of Birds with Nest and Hatchlings Handmade Miniature Vintage 70s $7.99
Adjustable Bird Feeder Pole w/Squirrel Proof Baffle, Bird Feeder PoleAdjustable Bird Feeder Pole w/Squirrel Proof Baffle, Bird Feeder Pole $45.19 Bird Feeders for Outdoors Hanging - Metal Bird Feeder with Double Suet Cage- IdeBird Feeders for Outdoors Hanging - Metal Bird Feeder with Double Suet Cage- Ide $27.79
4Pcs Natural Wood Bird Perch Parrot Stand Branches Fork Toyspet Bird Cage Wood4Pcs Natural Wood Bird Perch Parrot Stand Branches Fork Toyspet Bird Cage Wood $13.49 Authentic Plate 387 of Glossy Ibis from Birds of America (Havell ed.) by AudubonAuthentic Plate 387 of Glossy Ibis from Birds of America (Havell ed.) by Audubon $12,000.00
Bird B Gone - Reflect-A-Bird - Reflective Spinning Deterrent - Repels Pigeons.Bird B Gone - Reflect-A-Bird - Reflective Spinning Deterrent - Repels Pigeons. $34.00 J. Chase Intricate Carved Water Bird ArtworkJ. Chase Intricate Carved Water Bird Artwork $1,500.00
Adopt Pets Lore Seasonal 1 Today! Fast CheapAdopt Pets Lore Seasonal 1 Today! Fast Cheap $0.99 to Bird Buddy Outdoor Bird Feeder Kit 9" - BlueBird Buddy Outdoor Bird Feeder Kit 9" - Blue $72.19
J. Chase Double Bird SculptureJ. Chase Double Bird Sculpture $1,500.00 Bird Centrisorter Model 60 Stainless Steel ScreenBird Centrisorter Model 60 Stainless Steel Screen $37,500.00
Millet Spray 5 lb for Parrots birds Nutrient packed plump & fresh spray No StemsMillet Spray 5 lb for Parrots birds Nutrient packed plump & fresh spray No Stems $35.89 Netvue Birdfy Feeder Fhd Smart Bird Watching Feeder Camera Yellow ColorNetvue Birdfy Feeder Fhd Smart Bird Watching Feeder Camera Yellow Color $90.00
New ListingFused Glass Cardinal Bird At Bird Feeder Wall Plaque/Sun-catcher - NiceNew ListingFused Glass Cardinal Bird At Bird Feeder Wall Plaque/Sun-catcher - Nice $18.50 New Birdfy Nest - Smart Bamboo Birdhouse with Dual Cameras for Wild Bird NestingNew Birdfy Nest - Smart Bamboo Birdhouse with Dual Cameras for Wild Bird Nesting $199.88
New ListingResin Bird StatueNew ListingResin Bird Statue $14.25 7" Teaser Birds-Mirrored Wings7" Teaser Birds-Mirrored Wings $27.99
Swarovski (Austria) "Bee-Eaters Peridot" #957128 Crystal Paradise Birds FigurineSwarovski (Austria) "Bee-Eaters Peridot" #957128 Crystal Paradise Birds Figurine $1,499.95 Harymor Bird Feeder Camera Ai Identify Bird Species Solar Panel Smart - GreenHarymor Bird Feeder Camera Ai Identify Bird Species Solar Panel Smart - Green $65.95
Two Single Cocktail Napkins for Decoupage Botanical Bird Floral Bird Nest EggsTwo Single Cocktail Napkins for Decoupage Botanical Bird Floral Bird Nest Eggs $2.00 Bird Technologies 4240-268 / 4240268 (Brand New)Bird Technologies 4240-268 / 4240268 (Brand New) $136.00
8oz Nature Bird Nest Bird’S Nest Swallow Aaaa 燕窝 燕盏 227g Indonesia8oz Nature Bird Nest Bird’S Nest Swallow Aaaa 燕窝 燕盏 227g Indonesia $430.00 Bird Evolution Vitamins, Mineral, Aminoacid Supplement For Bird 60 Ml Exp. 12/27Bird Evolution Vitamins, Mineral, Aminoacid Supplement For Bird 60 Ml Exp. 12/27 $13.49
New ListingScott 3378F Fdc Winter Wren Pacific Rain Forest Series Collins Painted CachetNew ListingScott 3378F Fdc Winter Wren Pacific Rain Forest Series Collins Painted Cachet $8.98 New ListingVintage Hand Carved Wooden Shore Bird Hand Painted Long Billed CurlewNew ListingVintage Hand Carved Wooden Shore Bird Hand Painted Long Billed Curlew $35.00
Bird by Bird: Some Instructions on Writing and Life - Paperback - GoodBird by Bird: Some Instructions on Writing and Life - Paperback - Good $4.08 Kingfisher Bird Nwt Standing Metal Decor Garden Indoor Outdoor Attach to TreeKingfisher Bird Nwt Standing Metal Decor Garden Indoor Outdoor Attach to Tree $22.99
12 Bird Charms Antique Silver Tone Bird with Branch - Sc377412 Bird Charms Antique Silver Tone Bird with Branch - Sc3774 $4.99 Bird Toys, Parrot Toys for Large Birds,Natural Corn Cob and Loofah Slices Bird CBird Toys, Parrot Toys for Large Birds,Natural Corn Cob and Loofah Slices Bird C $12.39 to
4-Pc Set 5.25"H Bird Figurine Ornament Home Decor Unique Gift4-Pc Set 5.25"H Bird Figurine Ornament Home Decor Unique Gift $32.65 Squirrel-Proof Wild Bird Feeder - Portable Bird Feeder for Garden Yard OutsideSquirrel-Proof Wild Bird Feeder - Portable Bird Feeder for Garden Yard Outside $16.98
Wild Bird Feeder Hanging for Garden Yard Bird Feeder for Outside Squirrel ProofWild Bird Feeder Hanging for Garden Yard Bird Feeder for Outside Squirrel Proof $23.75 【In-Stock】Animal Heavenly Body Green Budgerigar Melopsittacus Bird Statue【In-Stock】Animal Heavenly Body Green Budgerigar Melopsittacus Bird Statue $39.99
New ListingUnique Vtg Bird Baby Bird Sculpture Clay 6” Hand PaintedNew ListingUnique Vtg Bird Baby Bird Sculpture Clay 6” Hand Painted $24.99 Bird Jonsson 24 Vibrating Screen S/SBird Jonsson 24 Vibrating Screen S/S $12,500.00
Bird M400 Pressure Screen Rebuilt 2018 By AftBird M400 Pressure Screen Rebuilt 2018 By Aft $44,500.00 Rustic, Hand-Painted Metal Rose-breasted Grosbeak Bird Replica Figurine DecorRustic, Hand-Painted Metal Rose-breasted Grosbeak Bird Replica Figurine Decor $12.95
Owl Decoy Statue Protect Garden Yard Scare Birds Away Pigeon Repellent ScarecrowOwl Decoy Statue Protect Garden Yard Scare Birds Away Pigeon Repellent Scarecrow $9.48 Rustic, Hand-Painted Metal Bluebird Bird Replica Figurine DecorRustic, Hand-Painted Metal Bluebird Bird Replica Figurine Decor $15.95
Mr. Bird Wild Bird Feast Birdseed Large Cylinder 4 lbs.Mr. Bird Wild Bird Feast Birdseed Large Cylinder 4 lbs. $36.97 to Chickadee Tit Bird Figurine Sculpture Mini Wood Art Statue Decor Carve OrnamentChickadee Tit Bird Figurine Sculpture Mini Wood Art Statue Decor Carve Ornament $10.99
Bird M800 Pressure Screen Rebuilt By Aft In 2018Bird M800 Pressure Screen Rebuilt By Aft In 2018 $59,500.00 Bird Feeder ~ Amish Handmade Recycled Poly Hexagon ~ Purple Lime & Yellow 5LbBird Feeder ~ Amish Handmade Recycled Poly Hexagon ~ Purple Lime & Yellow 5Lb $212.99
Eastern Bluebird Figurine Sculpture Mini Wood Art Statue Decor Carve OrnamentEastern Bluebird Figurine Sculpture Mini Wood Art Statue Decor Carve Ornament $10.99 Bird-X Bird Proof Transparent Repellent Deterrent 10flozBird-X Bird Proof Transparent Repellent Deterrent 10floz $9.00
{4} *Song Bird* Bird in Flight Bare Chipboard Die Cuts - 3" x 4 3/4"{4} *Song Bird* Bird in Flight Bare Chipboard Die Cuts - 3" x 4 3/4" $1.00 8oz Natural Swallow Bird Nest Bird's Nest Indonesia Grade Aaaa Us Buyer 燕窝 燕條 燕碎8oz Natural Swallow Bird Nest Bird's Nest Indonesia Grade Aaaa Us Buyer 燕窝 燕條 燕碎 $240.00
3Pcs Bird Toys Bird Shredding Foraging Toys Parakeet Toy Chewing Hanging Toy3Pcs Bird Toys Bird Shredding Foraging Toys Parakeet Toy Chewing Hanging Toy $12.52 Large Parrot Toys Bird Chewing Toys-Natural Nuts Corn Loofah Wooden BirdLarge Parrot Toys Bird Chewing Toys-Natural Nuts Corn Loofah Wooden Bird $17.90
Genuine Natural Indonesia Swallow Bird’s Nest Aaaaa 5A Grade - 100 GramsGenuine Natural Indonesia Swallow Bird’s Nest Aaaaa 5A Grade - 100 Grams $211.00
Click to see more Bird items at www.ebay.com
Prices current as of last update, 07/11/25 5:21am.

Home Contact Resources Exchange Links eBay