Bad opening sentence   The Accipitridae one of the two major families within the order Accipitriformes the diurnal birds of prey   This is plainly not true  It looks like someone has just replaced Falconiformes with Acciptriformes and not considered the effect on the meaning of the sentence   Im assuming that two major families refers to Falconidae and Accipitridae  Obviously the Falconiformes are not members of Acciptriformes and Acciptriformes is not synonymous with diurnal birds of prey   Ok research in molecular genetics is going to cause revisions and controversy in classification but we need to be careful when making wholesale replacements of one term with another nonequivalent term   Im going to try to reword that to recover its original meaning I hope I dont put anyones nose out of joint