Cygnus cygnus can be considered a swan among swans, the type species, hence archetype, of all swans. It is also a swan of superlatives. With a population of about 180,000, the whooper, though ...

As the cold spells persist, an increasing number of whooper swans (Cygnus cygnus ... told China Daily that the whooper swan is a rare species in China and is classified as a second-class protected ...