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Birds

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Birds

There are approximately 400 endangered bird species in the world today. The bird habitat is getting smaller, despite increased government protection . Many bird species are reaching dangerously low numbers. Scores of bird species have become extinct in the past, far more than the current amount of existing bird species.

Through habitat destruction, the introduction of non-native species, and deliberate hunting, we endanger many species. In the last 280 years, 42 species and 44 subspecies of birds are known to have become extinct.

For more information about birds in different parts of the world, just follow one of the links under 'Read more about'.

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Habitat loss and degradation are threats African birds have to deal with.
Air pollution and human activities are the threats birds have to deal with in America.
The majority of Asian birds lives in forrests. These forrests are threatened by conversion to other land-uses and overexploitation. Therefor the birds are threatened by the same dangers.
Carrabean birds are threatened by erosion of pristine habitats and illegal trade of the birds.
Hunting and economic development are the majority of the causes that lead to death of birds in Europe.
On the pacific, habitat destruction and 'invasive alien species' are the larges threats.
Two threats to seabirds are longline fishing and oil spills.

News about birds

Birds News -- ScienceDaily

Record-size sex chromosome found in two bird species - Researchers have discovered the largest known avian sex chromosome. The giant chromosome was created when four chromosomes fused together into one, and has been found in two species of lark.
Migratory birds shrinking as climate warms, new analysis of four-decade record shows - North American migratory birds have been getting smaller over the past four decades, and their wings have gotten a bit longer. Both changes appear to be responses to a warming climate.
New evolutionary insights into the early development of songbirds - An international team has sequenced a chromosome in zebra finches called the germline-restricted chromosome (GRC). This chromosome is only found in germline cells, the cells that hold genetic information which is passed on to the next generation. The researchers found that the GRC is tens of millions of years old and plays a key role in songbird biology, having collected genes used for embryonic development.