The development of birds can be classified into one of two main types: precocial and altricial. Precocial birds, like chickens, ducks and owls, hatch out with a warm covering of down feathers. A precocial chick can keep its body reasonably warm in the absence of heat from an incubating parent. Some precocial chicks can feed themselves soon after hatching.
The record for the longest estimated home run in a major-league game is 634 ft., by Mickey Mantle for the New York Yankees against the Detroit Tigers at Briggs Stadium in Detroit, Michigan, in September 1960.
Considered one of the best baseball players of all time, Hank Aaron broke Babe Ruth's home-run record when he hit his 715th home run in 1974.