The early burn out of the male Bustard may explain how biological aging evolved.

Up until now it was unknown whether males of the great bustard (Otis tarda), an emblematic bird in Spain and endangered at a global level, transmit information on their weight, size, and age through their plumage.

Even brooding female birds are sensitive to visual stimulation.

The government of Cambodia recently set aside more than 100 square miles of habitat to protect a large grassland bird from possible extinction.

THE beaver has not made the list of extinct species the Government hopes to reintroduce to Britain. Those which have attracted support include the red kite, which was hunted to the verge of extinction at the beginning of the last century.