Dab tsi parrots babble txog: kev tshawb fawb tshiab los ntawm ornithologists

Nws hloov tawm hais tias cov me nyuam qaib nyiam tham ib leeg thaum tus so tsaug zog. Ib txhia rov intonations tom qab lawv niam lawv txiv. Lwm tus ua lawv tus kheej lub suab uas tsis zoo li lwm yam.

Parrots feem ntau pib babble txij hnub 21 ntawm lub neej.

Tab sis tsis yog tag nrho. Hauv tib neeg cov menyuam yaus, cov tshuaj hormones ntxhov siab txhawb kev txhim kho kev sib txuas lus. Txhawm rau kuaj seb qhov kev ntxhov siab cuam tshuam li cas rau parrots, ornithologists tau muab cov me nyuam qaib ib co corticosterone. Nws yog tib neeg sib npaug ntawm cortisol. Tom qab ntawd, cov kws tshawb fawb tau muab piv rau cov kev hloov pauv nrog cov phooj ywg - menyuam qaib uas tsis tau muab corticosterone.

Yog li ntawd, cov pab pawg ntawm cov me nyuam qaib muab cov tshuaj hormones kev ntxhov siab tau ua haujlwm ntau dua. Cov menyuam qaib ua suab ntau ntau. Raws li qhov kev sim no, ornithologists xaus lus:

Cov tshuaj hormones ntxhov siab cuam tshuam rau kev loj hlob ntawm parrots ib yam li nws cuam tshuam rau menyuam yaus.

Qhov no tsis yog thawj qhov kev kawm zoo li no. Ornithologists los ntawm Venezuela teeb tsa cov zes tshwj xeeb ua los ntawm PVC kav ntawm qhov chaw nres tsheb lom neeg thiab txuas cov koob yees duab me me uas tshaj tawm cov duab thiab suab. Cov kev soj ntsuam ntawm cov menyuam qaib no tau koom nrog cov kws tshawb fawb los ntawm University of Texas. Lawv luam tawm lawv qhov kev tshawb pom hauv phau ntawv xov xwm ntawm Royal Society of London Proceedings of the Royal Society B. Qhov no yog ib qho piv txwv ntawm Academy of Sciences hauv UK.

Saib cov xov xwm ntxiv los ntawm lub ntiaj teb ntawm cov tsiaj hauv peb qhov teeb meem txhua lub lim tiam: