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Daj Wagtail: tus yam ntxwv thiab tej vaj tse

Daj Wagtail (pictured txoj cai thiab hauv qab no) belongs rau tsev neeg motacillidae. Qhov no me noog nyhav xwb 17 grams, thiab nws lub cev tsis muaj ntev tshaj li 17 cm. Zoo li tag nrho cov noog ntawm no tsev neeg, nws tus Tsov tus tw ntev thiab nyias. Rau Wagtails yam ntxwv tuav tus Tsov tus tw. Lub sab ib feem ntawm cov noog tau yellowed, rov qab nyob rau hauv nws tus txiv-grey. Nyob rau qhov tsaus ntuj nti xim av tis muaj dawb streaks. Tus Tsov tus tw yog dub ntawm cov npoo, dhau lawm, nrog dawb kab txaij. Tus txiv neej nyob rau hauv lub taub hau yog kom meej meej pom grey los yog dub kaus mom. Tus poj niam no kuj muaj, tab sis lub brownish-grey nyob rau hauv cov xim thiab kom meej meej cim. Lub ob txhais ceg thiab kaus ncauj noog dub. Hluas Daj Wagtail brownish-grey.

Nyob rau hauv Russia noog nyob txhua txhia qhov chaw. Qhov kos yog lub Caucasus, tundra thiab yav qab teb Sakhalin. Daj Wagtail yog ib qho nyob rau hauv sab qaum teb yog ib feem ntawm teb chaws Africa, North America thiab Eurasia, tsuas yog cov Far North, South-East Asia thiab lub roob yog hom twg. Yeej nws yog ib tug khiav noog, tab sis nyob rau hauv ib co yav qab teb qhov chaw nws prefers sedentary. Nws nyob rau ntawm tsawg-dag qhov chaw ntawm lub hav zoov-steppe thiab hav zoov chaw, swampy meadows thiab hav dej. Tej zaum txiav txim nyob rau hav marshes overgrown nrog fab. Nyob rau hauv lub taiga, nws yuav luag tsis tau pom, tab sis nws tshwm sim hais tias settles ntawm tus dej lub tsev txhab nyiaj. zes ceev mas nws txawv heev. Qhov chaw muaj cais zes, thiab nyob rau hauv tej rooj plaub tsim tuab settlements.

Nyob rau hauv qhov chaw ntawm zes daj wagtail tuaj txog sai li sai tau raws li cov daus melts thiab cov nyom yuav ntsuab. Nws tag nrho cov nyob rau hauv lub latitude. Yog hais tias cov no yog cov chaw ntawm central Russia, thiab nws muaj nws zoo nkaus li tom qab hauv thawj ib nrab ntawm lub Plaub Hlis, thiab nyob rau hauv Siberia - tsis tau ua ntej hauv thawj ib nrab ntawm Tej zaum.

Daj Wagtail prefers nyob ze dej. Nws yuav ua tau ntub meadows, ntug dej ntawm cov pas dej thiab cov niam dej. Nws hlub wagtail thiab marshes overgrown nrog fab. Zes qhov chaw nws xaiv ib tug ob peb hnub, ua tib zoo coj txhua lub ces kaum. Wagtail zes noog settles rau hauv av, xaiv ib tug haum qhov, veiled hillock, hav txwv yeem los yog nyom. Thaum sim hawm caij nyoog txog lub zes ntawm crows, dev los yog tib neeg manifests ib tug muaj zog kev txhawj xeeb. Thiab yog hais tias nyob rau hauv lub qhov chaw ntawm nws lub zes yuav feem ntau tshwm vacationers, nws tsuas yoojyim lub tsev qhov chaw.

Lub zes yog ib tug ntiav khob, uas yog lub tsev me me ceg, nplooj, nyom stems thiab keeb kwm. Cov hauv qab no ib txwm lined nrog cov plaub hau thiab plaub. Masonry yog tsis ntau tshaj li 5 qe greenish los yog yellowish xim nrog ib tug tuab xim av los yog txho specks. Lub ncu tus kab mob lub sij hawm kav tsis muaj ntau tshaj li 13 hnub, thiab tsuas yog ob lub lis piam hauv lub me nyuam qaib nyob rau hauv lub zes. Nws tshwm sim hais tias cov xim daj wagtail muaj lub sij hawm thaum lub sij hawm lub caij ntuj sov yuav ua li cas ob masonry.

Lawv taw, cov noog yog xav reminiscent ntawm Dawb Wagtails. Tab sis tsis zoo li lawv nws prey xav mus nrhiav rau hauv av, tsis yog nyob rau hauv cov huab cua. Lawv sai sai ya uas tsis muaj mus rau hauv av thiab sai sai txav mus rau nws. Lawv pub on tag nrho cov hom ntawm cov me me invertebrates. Cov khoom noj muaj kab thiab weevils, kab laug sab, kab lia thiab nplooj kab, yoov thiab yoov tshaj cum, npaub thiab ntsaum.

Qhov chaw nyob rau hauv nruab nrab ntawm lub caij ntuj sov neeg laus noog pib mus laij los ntawm cov zus zag nyob rau hauv marshy chaw. Thiab txij li thaum nruab nrab ntawm Lub yim hli ntuj thiab lub thib ob ib nrab ntawm Lub kaum hli ntuj, lawv yuav muab xa mus rau lawv qhov chaw ntawm hibernation. Cov tsiv teb tsaws yuav siv sij hawm qhov chaw nyob rau hauv South Asia, Africa thiab cov Islands tuaj ntawm lub Malay Archipelago thiab cov Philippines.

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