Compléter MAMMALS and birdsVersion en ligne MAMMALS and birds par MARIA JESÚS SS 1 hair habitats fly oviparous different two viviparous fur Mammals are . The means they have live babies who drink milk . They have or . Mammls live in different and can move in different ways . Birds have feather , wings , legs and a beak . Birds are . This means they eggs with hard shells . They live in habitats . Most birds can .