qT=2&tQ=Which kind baby bird is bigger than its parents?&tC=Hummingbird|Penguin|Eagle|Clydesdale&cC=3&fB=Baby eagles quickly grow to become bigger than their parents.  But then, as they mature, they lose plumage and weight.<br><br>This enables them to fly better when they go out on their own to become parents themselves. So, as eagles approach parenthood, their size is reduced, and the cycle starts over again.