I assume you meant "species". In the world (based on current taxonomy, which changes quite often, actually), there are about 9,000 species of birds.
trees get uprooted wich causes birds to die and other animals
Birds that nest in the northern hemisphere tend to migrate northward in the spring to take advantage of burgeoning insect populations, budding plants and an abundance of nesting locations. As winter approaches, and the availability of insects and other food resources drops, the birds move south again. Escaping the cold is a motivating factor but many species, including hummingbirds, can withstand freezing temperatures as long as an adequate supply of food is available.
There are 1000 species of birds in South Africa
Greater different kinds of birds
Biodiversity. The location with 170 species of birds has greater biodiversity compared to the one with 100 species, as it indicates a wider variety and richness of bird species present in that area.
Owls are a species, actually. But they are birds of prey (raptors) which are all avians (birds.) In other words: owls are birds of prey
There are many birds that call the desert home. Next to the rainforest, the desert has the greatest biodiversity when it comes to animals. Birds have an advantage in that they can fly to a water of source.
There are approximately 10,000 bird species in the world. This number varies by a few hundred birds, depending on which classification system you use. Clements (now run by Cornell University) lists about 9,800 bird species whereas Sibley and IOU list over 10,000 species. As with most animal groupings, species are being redefined and what was considered to be one species may be split into two or more species, and in other cases. two species may be combined into one species. Clements is slow to make such changes. Splits and groupings of bird species happen regularly. It's even more common in butterflies and the taxonomy of moths is an even bigger mess! In the United States (including Hawaii) there are about 980 bird species, depending on the listing source.
"Birds" are a clade; a group of related species. In particular, they're members of the class Aves.
Birds that do not migrate are commonly referred to as "resident birds." These species remain in the same geographic area throughout the year, adapting to local seasonal changes instead of relocating. Resident birds have developed behaviors and adaptations that allow them to survive and thrive in their specific environments regardless of the season.
There are approximately 10,000 species of birds in the world. In Southeast Asia, there are over 2,000 species of birds, making it a region with high avian biodiversity.