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Associations 13
Mailing Lists 3
Personal Pages 10
Publications 8
Research Centers 11
| | Birds - Animals, Living Things, Science, School Time, Kids and Teens 431
Birding - Recreation 1,776
Aves - Chordata, Animalia, Flora and Fauna, Biology, Science 1,699
Birds - Vertebrates, Paleontology, Earth Sciences, Science 4
Birds - Conservation, Biodiversity, Environment, Science 58
National Audubon Society - Organizations, Environment, Issues, Society 314
 ABCD: Avian Brain Circuitry DatabaseABCD: Avian Brain Circuitry Database
 Searchable database of the regions of a bird’s brain.
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The Atlas of Bird MigrationThe Atlas of Bird Migration
 Comprehensive article on the great challenge faced by long distance migrants which have to find their way to winter quarters and return to their breeding grounds in the spring. [PDF]
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Avian Reproduction: Anatomy and the Bird EggAvian Reproduction: Anatomy and the Bird Egg
 Notes on the bird reproductive system and the development of the embryo, with explanatory drawings and photographs.
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Avian Reproduction: Clutch Size, Incubation and HatchingAvian Reproduction: Clutch Size, Incubation and Hatching
 Notes on clutch size optimization in birds, reproductive success, embryo development, incubation and the hatching process, with links to other similar articles.
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BeakBeak
 Article describing the anatomy of this distinctive feature of birds which, in addition to eating, can be used for grooming, manipulating objects, killing prey, probing for food, courtship, and feeding the young.
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Bird FeathersBird Feathers
 This article discusses the features of feathers and the different types of feathers found on different parts of the bird.
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Bird MilkBird Milk
 Article describing how the young of some birds are fed on special secretions from their parents.
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Bird Respiratory SystemBird Respiratory System
 Article explaining how air sacs play an important part in the gaseous exchange in birds, with many diagrams.
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Bird Skull CollectionBird Skull Collection
 Images and data about skulls of western Palearctic and Tropical species, with complete skeletons of some species.
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Birdcall synthesisBirdcall synthesis
 Article describing how birds use their syrinx, throat and beak to make a wide range of tones without the sophisticated muscle structure possessed by humans.
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BirdnetBirdnet
 Ornithological Council's website with comprehensive data about North American ornithological resources.
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Chicken EmbryoChicken Embryo
 A number of fine photographs of the development of a chick inside the egg.
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CrechesCreches
 Article describing how some birds adopt the strategy of grouping their young, leaving them with a guardian while both parents go off to forage.
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Development and Uses of Avian Skeleton CollectionsDevelopment and Uses of Avian Skeleton Collections
 Skeletons are essential for the identification of fossils, bones from archaeological sites and food items taken by predators as well as histological and physiological studies. [PDF]
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EcoBirds BehaviourEcoBirds Behaviour
 Provides a series of bird articles covering nesting, song, migration and the curious habit of anting.
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Electronic Resources on OrnithologyElectronic Resources on Ornithology
 Annotated links and ornithological articles by Christopher Majka.
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Feather QuestFeather Quest
 Interactive quiz. Can you identify the birds from which these feathers come?
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Flapping Flight: Inertial StudiesFlapping Flight: Inertial Studies
 Technical article by researchers at Bristol University who measured the wings of bats and birds and calculated their efficiency in flight.
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Flight in BirdsFlight in Birds
 How do birds fly? An introduction to flight in birds examining wing shape, airflows, flapping flight and gliding.
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Incubation: Heating the EggIncubation: Heating the Egg
 Most birds create the required temperature by sitting on their eggs but some transfer heat through their webbed feet, and the megapodes of Australia bury them in a mound of decaying vegetation.
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Index of LecturesIndex of Lectures
 A series of articles on different aspects of bird biology such as feathers, flight, respiration, territoriality, reproduction and metabolism.
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List of EssaysList of Essays
 Many articles on every aspect of bird life. A comprehensive and useful resource.
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The Making of an EggThe Making of an Egg
 Describes the development of the egg of a bird from the release of a mature ovum to the completed egg with shell being laid.
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Mechanics of Respiration in BirdsMechanics of Respiration in Birds
 Notes and diagrams explaining how birds ventilate their lungs.
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The Mystery of MigrationThe Mystery of Migration
 Article that tries to answer the question of how and why birds migrate.
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The Normal Moulting Process in BirdsThe Normal Moulting Process in Birds
 Talk given by Avian Vet A. K. Jones to a conference of the Association of Avian Veterinarians in August 1998.
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Ornithological Worldwide LiteratureOrnithological Worldwide Literature
 OWL is a compilation of citations and abstracts from worldwide publications concerning the science of ornithology.
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Ornithology: Science of BirdsOrnithology: Science of Birds
 Includes data on the science of wild birds, with an emphasis on conservation and education.
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Parental CareParental Care
 The young of passerines when first hatched are naked, blind, and helpless and require much care which involves feeding, training and protection from predators.
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PolygynyPolygyny
 Most birds are monogamous, but in some species the occurrence of polygyny, where one male mates with more than one female, is related to high-quality territories with an abundance of resources.
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Population DynamicsPopulation Dynamics
 Essay discussing the factors behind the variation in the number of individuals in a bird population over time.
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Power Napping in PigeonsPower Napping in Pigeons
 Max Planck scientists find evidence that pigeons prevented from taking naps in the afternoon sleep more intensely at night. [PDF]
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A Qualitative and Quantitative Study of the Lung of an OstrichA Qualitative and Quantitative Study of the Lung of an Ostrich
 The colossal body size, the relinquishment of flight and the extreme thermal stresses on the ground make the examination of an ostrich’s lungs rewarding.
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Raptor Information SystemRaptor Information System
 The RIS is a free searchable catalog of over 38,000 references about the biology and management of birds of prey.
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Sense of DirectionSense of Direction
 Article from the Princeton Weekly Bulletin outlining how Biologist Martin Wikelski is helping to settle the long-standing debate over how migratory birds manage to navigate in darkness and bad weather.
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Sexual SelectionSexual Selection
 Female birds of some species tend to choose as mates those males holding the most desirable territories, but there is little evidence that females preferentially select males with different degrees of ornamentation.
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Site TenacitySite Tenacity
 Many birds return to the same nesting site each season. This essay discusses why this should be so.
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Smithsonian Migratory Bird CenterSmithsonian Migratory Bird Center
 Ecological and land-management research, education, conservation policy, data on migration and fact sheets.
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The Structure of Avian Skin and FeathersThe Structure of Avian Skin and Feathers
 Technical article describing a bird's skin and associated structures, its feathers, beak, claws and spurs.
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Teachers' Domain: Bird Beak GalleryTeachers' Domain: Bird Beak Gallery
 Provides an essay on beaks, and photographs of birds heads and beaks.
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TerritorialityTerritoriality
 Article describing how birds try to exclude others of the same species from their home range.
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Urban BirdsUrban Birds
 Article discussing how birds have adapted to urban foraging amid the artificial concrete and steel ecosystems of cities.
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Vocal CopyingVocal Copying
 Article describing how birds learn their songs from adult tutors and may incorporate sounds from other species into their repertoire.
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Vocal DialectsVocal Dialects
 Article describing how the songs of many avian species show geographic variation.
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Vocal FunctionsVocal Functions
 Songs identify the species of the singing bird. The territorial song of males serves the dual purpose of territorial proclamation directed at other males and of mate attraction directed toward females.
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What is a Bird?What is a Bird?
 This article describes the evolution of birds, their value to humanity, characteristic features, behavior and their reproductive behavior.
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When and How do Birds MigrateWhen and How do Birds Migrate
 Article discussing the varying strategies adopted by birds in finding their way when taking part in their long distance journeys.
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