A rep for Charles Kelley was not immediately available for comment. Truth or rumor, when news that the singer was splitting hit the internet Sunday (October 18), Twitter immediately exploded with pithy commentary.
Best Answer: Blame it on the comet that struck earth. All animals larger then 10kg died of. Just leaving behind small mammals, small reptiles and tiny beaked flying dinosaurs (birds). All the cool giant dinosaurs died out and you just left with tiny birds which evolve to various bird species including the chicken.
In fact, if birds evolved from dinosaurs, the reptiles from which the mammals evolved disappeared even before them. In fact, they ruled the Earth before the emergence of the dinosaurs. Because they have already many traits hinting to mammals (like differentiated teeth), they were called mammalian reptiles.