text: Quarter of world #39;s bird species face extinction threat A tenth of the world #39;s bird species are likely to have vanished by the year 2100, with another 15 on the brink of extinction, a group of scientists have warned.
inputs: Quarter of world #39;s bird species face extinction threat A tenth of the world #39;s bird species are likely to have vanished by the year 2100, with another 15 on the brink of extinction, a group of scientists have warned.