Peb feem coob yeej paub cov ntoo peckers. Cov noog no ya txhua hnub ntev, ya los ntawm tsob ntoo mus rau tsob ntoo, nce lub cev thiab rhuav cov tawv ntoo thiab ntoo nrog lawv cov kab ntse ntse, nrhiav cov kab tsuag. Lub khob feem ntawm no tau hnov los ntawm txhua tus neeg uas tau nyob hauv hav zoov. Woodpeckers hollow tawm ib tsob ntoo nrog lub zog uas yog tias muaj lwm tus noog tshwm sim hauv lawv qhov chaw, nws yuav tuag, tsis tuaj yeem tiv taus txawm tias tsib feeb. Tab sis tus phab ej ntawm kab lus no tsis tuaj yeem nyob lwm yam.
Nyob rau hauv tsab xov xwm peb yuav qhia rau koj seb ib tug woodpecker yuav tuag los ntawm.
Cov noog no yog dab tsi?
Ib pawg neeg coob ntawm tsob ntoo nce toj ntoo yog paub zoo rau lawv lub peev xwm los perch ntawm ib tsob ntoo ncaj, nrhiav kab, kab kab, kab thiab ntsaum. Cov noog no tsis zoo heev, txawm tias lawv ya nrawm heev. Lawv muaj ib tug ncaj thiab nyias, tab sis muaj zog beak, zoo ib yam li ib tug me me chisel, thiab feem ntau ib tug brightly xim plumage.
Qhov loj ntawm cov noogwoodpeckers tuaj yeem sib txawv nyob ntawm hom: los ntawm tus neeg sawv cev me tshaj plaws ntawm lub ntsej muag uas hnyav 7 grams thiab lub cev ntev ntawm 8 centimeters mus rau Mullerian woodpecker loj. Qhov hnyav ntawm tom kawg yog 450 grams nrog qhov loj ntawm 50 centimeters. Tab sis cov no yog cov neeg nyob hauv South Asia thiab America. Thiab lawv nyob li cas, cov ntoo peckers nyob rau hauv Lavxias teb sab qhib qhov chaw tuag los ntawm (loj motley, me motley, daj, wryneck, ntsuab thiab grey woodpeckers)?
tus ntoo khaub lig tsis mob taub hau
Qhov xav tsis thoob tshaj plaws yog qhov tseeb tias ib tus noog me me ib ob ua rau 20 hits ntawm tsob ntoo, thiab kwv yees li 12 txhiab ib hnub. Nws cuam nws lub taub hau rov qab nrog ib tug loj tsis zoo acceleration. Nyob rau tib lub sij hawm, tus yam ntxwv woodpecker "trills", uas muaj feem ntau ntawm cov tshuab, tuaj yeem ntev heev. Tom qab tag nrho, cov noog siv lawv tsis tsuas yog mus nrhiav zaub mov: nws xav tau lawv thaum lub sij hawm mating lub caij sib txuas lus nrog cov poj niam thiab ceeb toom rau cov neeg sib tw ua tau tias cheeb tsam no twb nyob. Los ntawm txoj kev, lub suab ntawm woodpecker tuaj yeem hnov ntawm qhov deb ntawm ib thiab ib nrab kilometers.
Nws tau raug tsim tsa tias lub taub hau ntawm cov noog no tau ntsib kev thauj khoom piv rau cov uas tau ua rau cov neeg nyob hauv lub sijhawm pib lub dav hlau. Nrog kev qhia me ntsis - nws loj dua ob zaug!
Nej cov noog yuav tuag li cas yog tus noog tsis ua mob rau nws lub cev? Thiab yuav ua li cas ib tug noog tiv taus xws li load?
Nyob rau xyoo 2006, qhov xwm txheej ntuj no tau piav qhia los ntawm ob tus kws kho mob hauv Tebchaws Meskas, uas tau txais txiaj ntsig rau kev tshawb pom ntawm Ig Nobel, uas yog, Anti-Nobel nqi zog. Txawm hais tias muaj ntau tshaj li cov laurels me me, cov kws tshawb fawb tau piav qhia meej txog qhov laj thawj ntawm qhov kev tawm tsam ntawm woodpecker nyob rau hauv cov khoom ntuj raug txim.
Ornithologists tau muab ob peb lub laj thawj vim li cas tus ntoo pecker lub cev tsis raug kev txom nyem los ntawm nws txoj kev ua neej. Qhov ntawd yog, yog tias ntoo peckers tuag los ntawm ib yam dab tsi, ces nws tsis yog los ntawm khob.
Koj tuaj yeem qhia cov noog no muaj qee yam kev ruaj ntseg zoo.
Ua ntej tshaj plaws, tus ntoo pecker tus beak yog ncaj thiab tawv. Nws kov cov ntoo nruj me ntsis perpendicularly, tsis muaj vibrating los ntawm kev cuam tshuam thiab tsis khoov.
Thib ob, tus noog muaj cov qauv tshwj xeeb ntawm pob txha taub hau: cov pob txha raug cais tawm ntawm lub hlwb los ntawm ib txheej nyias nyias, tab sis cov kua dej intracranial, uas muaj peev xwm ua kom lub cev tsis muaj zog txaus ntshai rau lub hlwb.
Woodpeckers muaj lwm qhov tseem ceeb shock absorber. Nws yog hu ua hyoid thiab yog ib qho cartilaginous sublingual tsim uas nkag mus rau hauv nasopharynx thiab qhwv ib ncig ntawm pob txha taub hau.
Cov kab mob pob txha ntawm cov noog muaj ntau yam spongy teeb meem - tshwj xeeb tshaj yog cov cranium. Qhov no nuance ntawm tus qauv yog ntau tshaj rau cov me nyuam qaib tshaj rau cov laus noog, tab sis woodpeckers khaws nws tag nrho lawv lub neej. Yog li, peb yuav tsis pom cov lus teb rau lo lus nug "dab tsi woodpeckers tuag los ntawm" hauv cov ntsiab lus no.
Qhov pom noog tsis raug kev txom nyem. Nrog rau txhua qhov cuam tshuam ntawm tsob ntoo, daim tawv muag thib peb (lwm yam hu ua "nictitating membrane") ntawm woodpecker ntog, uas tiv thaiv lub qhov muag los ntawm sawdust ya thaum muaj kev cuam tshuam.
Yuav ua li cas teb cov lus nug?
Vim li cas cov peckers tuaj yeem tuag?
Lub neej nyob nruab nrab ntawm ntau hom ntoo peckers yog los ntawm 5 txog 11 xyoo. Tab sis tsis yog txhua tus ntawm lawv nyob rau lub hnub nyoog siab tshaj - tom qab tag nrho, cov ntoo peckers muaj cov yeeb ncuab ntau hauv lawv qhov chaw nyob.
Lawv tuaj yeem ntes tau los ntawm ntau cov noog ntawm cov tsiaj nyeg: falcons, owls, owls thiab hawks. Lawv tuaj yeem raug tua los ntawm ib qho ntawm cov tsiaj txhu, xws li marten, hma, lynx, ermine, thiab txawm tias ib tug nab loj. Woodpecker zes yog nquag rhuav tshem los ntawm squirrels thiab dormice. Thaum kawg, tus noog yuav tuag los ntawm kab mob los yog hnub nyoog laus. Tab sis tus ntoo pecker tsis nyob rau hauv qhov txaus ntshai ntawm concussion.
Nov yog qhov peb nrhiav pom dab tsi woodpeckers tuaj yeem tuag los ntawm.
