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.
A lead-off home run is a home run hit by the first batter of a team, the leadoff hitter of the first inning of the game. In MLB, Rickey Henderson holds the record with 81 lead-off home runs. Craig Biggio holds the National League record with 53, second overall to Henderson.