Oiseaux des villes et campagne avec la LPO

Dans le cadre du projet éco-école axé sur la découverte de la biodiversité, une sortie découverte des oiseaux est organisée en cours de SVT. Objectifs de ce temps de découvertes : observer la nature de proximité, aborder les notions d’espèce et de classification et comprendre l’impact de l’homme sur la biodiversité. Laetitia Heuzé de la Ligue pour la Protection des

Actu-sciences

Comment volait le plus grand oiseau ayant existé ?

Une modélisation suggère qu’avec une envergure de 6,4 mètres, l’oiseau disparu Pelagornis sandersi pouvait planer sur de longues distances au-dessus des océans.« Ses ailes de géant l’empêchent de marcher », écrivait Charles Baudelaire à propos de l’albatros. Qu’aurait-il alors dit de Pelagornis sandersi ? Cet oiseau ayant vécu il y a entre 25 et 28 millions d’années a en effet

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