Păsările dintr-o specie asemănătoare piţigoilor au fost monitorizate și au dat dovadă de un simţ al anticipării foarte dezvoltat, părăsind o regiune înainte de sosirea unei furtuni foarte puternice.
Păsările au parcurs 1.500 de kilometri în cinci zile, pentru a scăpa de niște furtuni foarte puternice, potrivit studiului publicat joi în revista americană Current Biology.
„Cel mai interesant este că păsările şi-au părăsit cuiburile cu mult timp înainte de sosirea furtunii. În momentul în care specialiştii de la canalul meteo ne spuneau că furtuna se îndreaptă spre noi, păsările se pregăteau să părăsească regiunea”, a declarat Henry Streby, specialist în ecologie la Universitatea California Berkeley.
Potrivit savanţilor, spre deosebire de oameni, păsările pot auzi infrasunetele, sunete de frecvenţă foarte joasă care se propagă pe distanţe foarte lungi şi sunt generate mai ales de perturbările meteorologice severe.
„Meteorologii şi fizicienii ştiu de mult timp că furtunile care produc tornade generează emisii puternice de infrasunete, care călătoresc mii de kilometri şi la frecvenţe la care păsările sunt cele mai sensibile”, a declarat Streby.
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