Txiv neej cov geese yug nrog ci txiv kab ntxwv qab, hos poj niam yuav muaj ib xim av qab. Raws li ob leeg poj niam laus laus, txiv neej loj hlob dawb plaub thiab khaws cov txiv kab ntxwv qab. Cov poj niam yuav loj hlob tsaus-grey feathering, nrog daim nqi hloov mus rau txiv kab ntxwv. Raws li cov poj niam muaj hnub nyoog, nws qab yuav coj ib tug ntsuab cam khwb cia.
Ib yam li ntawd, nws yog nug, dab tsi xim yog goose's beak?
Cov neeg laus yog cov dawb nrog cov tis dub. Daim nqi yog liab thiab tsis muaj cov npoo dub dav ntawm daim nqi (lub npe hu ua "grinning thaj") uas Snow Geese qhia.
Tom qab ntawd, lo lus nug yog, dab tsi cov ntsiab lus yog goose's beak ua los ntawm? Tsis zoo li koj cov hniav, qab yog npog nrog daim tawv nqaij. Cov tawv nqaij no tsim cov khoom hu ua keratin - tib yam khoom plaub, plaub hau, thiab cov rau tes ua los ntawm. Cov keratin ua by qub qab yuav qhuav thiab condense rau ua daim nqi nyuaj thiab ruaj khov. Cov qhuav keratin kuj muab cov qab glossy tsos.
Tom qab, lo lus nug yog, dab tsi xim yog geese?
Domestic geese tuaj yeem yog xim ntawm grey kiag li (tsiaj qus) kom tag dawb, tab sis lawv ib txwm loj thiab blocky nrog ib daim nqi sib txawv. Lwm hom goose uas tau ua hauv tsev yog Swan Goose, ib txwm nyob rau sab hnub tuaj Eurasia thiab qee zaum hu ua Suav goose.
Muaj pes tsawg tus goose xiav?
Lub wingspan rau ob hom subspecies yog li ntawm 135 txog 165 cm (53 txog 65 nyob rau hauv). Xiav- morph noog tsis tshua muaj ntawm Greater Snow Geese thiab ntawm cov neeg sab hnub tuaj ntawm Cov Tsawg.
