Penguin Vocabulary Crossword

moving through the water like a porpoise
having a sharp projection, angled away from the main point so as to make removal difficult
the return of the partly digested food from the stomach to the mouth
the shedding of old feathers
designed to have very little resistance to a flow of water
material used to prevent the loss of heat
a change by which a species becomes better suited to its environment
closely packed together matter
situated some distance away; secluded
the act of a bird cleaning and straightening its feathers
the breeding ground of penguins
to sit on eggs so as to hatch by the warmth of the body
penguin nurseries where the chicks are cared for
the excrement (poop) of penguins
the preying of one animal on others
the number of deaths in a given time or space
animals that maintain a constant body temperature
a tuft of feathers on the head of a bird