Cov kws ntoo yog cov neeg feem ntau arboreal. Cov peev xwm ua lub zog zoo uas cov noog no tau tso cai rau nws paub tias yog kws kho mob hav zoov. Tseeb, tsis muaj ib qho ntawm cov hav zoov noog pab nyob hauv hav zoov ntau npaum li tus woodpecker.
Kab thiab lawv cov kab menyuam ua rau muaj kev puas tsuaj rau hav zoov. Weevils, tawv beetles thiab longhorn beetles nkaum hauv qhov tob ntawm ntoo thiab hauv qab cov tawv ntoo, ua rau thiab rhuav tshem cov kab mob tsob ntoo. Tsuas yog ib qho woodpecker tuaj yeem mus rau kab thiab txuag ntoo. Nyob rau tib lub sijhawm, tsob ntoo zoo tsis muaj kev puas tsuaj rau woodpecker. Seb nroj tsuag puas xav tau kev pab "huv", nws txiav txim siab los ntawm kev npuaj nws. Nws pib rauj ntoo txij hauv qab nrog nws nqaj, thiab, txhawm rau tsob ntoo nrog nws caj npab, nce ib puag ncig lub cev. Tus noog tsis tawm ntawm tsob ntoo kom txog thaum nws ntxuav nws cov kab tsuag, lossis paub tseeb tias nws tsis cuam tshuam los ntawm lawv. Tom qab tus ntoo qhib qhov ntoo ua rau tus ntoo, ntshai tus menyuam kab pib tsiv, sim khiav tawm. Tus noog hnov cov no txav nrog lub pob ntseg rhiab, thiab hauv qhov chaw pib pib tawg ntawm daim tawv ntoo lossis gouge lub larva tawm ntawm ntoo. Lub woodpecker tus nplaig yog noo nrog kua qaub ncaug thiab tiv thaiv kom deb ntawm nws lub nqaj ncaj qha rau hauv lub qhov ntoo, qhov twg cov kab thiab cov kab yooj yim lo rau nws. Ntxiv rau "kev kho" ntoo, cov ntoo pab tau ntau tus noog kom muaj sia nyob hauv hav zoov, tawm lawv cov hollows rau lawv tom qab lawv hle lawv cov qaib. Tus noog ib txwm npog lawv hauv qab nrog cov tsiaj me me ua haujlwm, yog li npaj cov txaj txaj thiab insulating lub hollow. Hauv cov hav zoov woodpecker zes yav dhau los, kwv yees li peb caug tsiaj ntawm cov hav zoov noog, suav nrog cov plas me thiab cov os, nrhiav chaw nkaum rau lawv tus kheej. Tus neeg woodpecker lub zog ua haujlwm tau zoo heev, thiab nyob rau lub sijhawm luv luv nws tau ua txoj haujlwm tseem ceeb heev. Lub laj kab woodpecker txav ntawm nrawm ntawm xya metres ib pliag thaum chiselling, yog li ib lub tshuab ua tiav hauv ib txhiab ntawm ib pliag. Hauv qhov no nws tau pab los ntawm lub cev caj dab khov heev, thiab cov porosity ntawm woodpecker pob txha taub hau cov pob txha muag ua rau tawg, uas tiv thaiv tus noog lub hlwb los ntawm kev sib cav. Kwv yees li 800 tus kab raug rhuav tshem los ntawm ib tug neeg ib hnub.
