Whooper swans muaj ntau yam thiab pom nyob rau hauv thaj chaw boreal hauv Eurasia thiab ntawm ntau cov Islands tuaj ze. Lawv tsiv teb tsaws ntau pua lossis ntau txhiab mais mus rau qhov chaw caij ntuj no nyob rau sab hnub tuaj Asia thiab sab qab teb Europe. Muaj qee zaus vagants nyob rau sab hnub poob North America thiab Indian subcontinent.
Vim li cas ho hu ua swans?
Nws yog Eurasian tus khub ntawmNorth American trumpeter swan, thiab hom hom rau genus Cygnus. Francis Willughby thiab John Ray's Ornithology ntawm 1676 hu ua "tus Elk, Hooper, lossis qus Swan". Lub npe scientific yog los ntawm cygnus, Latin rau "swan".
Puas yog swans tsawg?
Tus swan whooper yog ib tug noog tsis tshua muaj nyob hauv UK, tab sis muaj coob tus neeg loj dua uas siv lub caij ntuj no ntawm no tom qab taug kev ntev los ntawm Iceland. Nws muaj xim daj ntau dua ntawm nws daim nqi daj-thiab-dub dua li Bewick's Swan.
Swan ya tau siab npaum li cas?
Txhua tus swans tuaj yeem ya nrog qee hom mus txog qhov siab ntawm 6,000 txog 8,000 feet, nruab nrab nrawm ntawm 20 txog 30 mais toj ib teev thiab taug kev ntau txhiab mais txhua xyoo.
swan nyob ntev npaum li cas?
swan ib txwm nyob ntev npaum li cas? Nyob rau hauv cov qus, nrog rau tag nrho cov kev phom sij lawv yuav tsum tau nyob nrog (vandals, pa phem, dev, mink, overhead cables, txuas hniav, pylons, lead lom, nuv ntses-tackle raug mob thiab lwm yam), qhov nruab nrab lifespan yuav yog 12xyoo. Hauv ib puag ncig tiv thaiv daim duab no tuaj yeem ncav cuag 30 xyoo.
