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For example, the spectacled flowerpecker was only discovered in 2010, and did not receive its scientific name (Dicaeum dayakorum) until 2019, [4] adding to the other 73 new bird species described by ornithologists from 2000 – 2009. [5] [6] [7] Global population estimates for many of these at this time would lack accuracy.
This article lists living orders and families of birds. In total there are about 11,000 species of birds described as of 2024, [1] though one estimate of the real number places it at almost 20,000. [2] The order passerines (perching birds) alone accounts for well over 5,000 species.
eBird is an online database of bird observations providing scientists, researchers and amateur naturalists with real-time data about bird distribution and abundance.Originally restricted to sightings from the Western Hemisphere, the project expanded to include New Zealand in 2008, [1] and again expanded to cover the whole world in June 2010.
Birds of the World is a subscription-access database that aims to describe comprehensive life history information on birds.This includes: [1] Species accounts . Details on taxonomy, habitat, breeding, diet, and behaviors
Many species migrate annually over great distances and across oceans; several families of birds have adapted to life both on the world's oceans and in them, and some seabird species come ashore only to breed, [68] while some penguins have been recorded diving up to 300 metres (980 ft) deep.
Some live only in pairs as adults, others like American crows, can have extended family groups on one territory, others, like fish crows, live in larger groups of unrelated birds of many ages ...
List of bird genera concerns the chordata class of aves or birds, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, and a high metabolic rate. Restless flycatcher in the downstroke of flapping flight
In many parts of the world peregrine falcons have adapted to urban habitats, nesting on cathedrals, skyscraper window ledges, tower blocks, [118] and the towers of suspension bridges. Many of these nesting birds are encouraged, sometimes gathering media attention and often monitored by cameras. [119] [note 6]