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Vertebrates - 2

Birds and Mammals

preening in birds, the act of grooming and maintaining their feathers
molting the shedding of an exoskeleton, skin, feathers, or hair to be replaced by new parts
down feathers a soft feather that covers the body of young birds and provides insulation to adult birds
contour feathers one of the most external feathers that cover a bird and that helps determine its shape
lift an upward force on an object that moves in a fluid
brooding to sit on and cover eggs to keep them warm until they hatch to incubate
mammary gland in a female mammal, a gland that secretes milk
diaphragm a dome-shaped muscle that is attached to the lower ribs and functions as the main muscle in respiration
placental mammal a mammal that nourishes its unborn offspring through placenta inside its uterus
gestation period in mammals, the length of time between fertilization and birth
monotreme a mammal that lays eggs
marsupial a mammal that carries and nourishes its young in a pouch
Created by: lsvocab