The birds-of-paradise are a group of brightly colored birds living mostly in New Guinea that have elaborate and elongated feathers. Behavioral isolation prevents different birds-of-paradise species from mating and reproducing: a)Males of one species perform orchestrated dances and sing songs that only attract females of the same species. b)Males and females of one species live on one side of the island and never venture to the other side where other species live. c)Males and females of one species are only active at night, while other species are only active during the day. d)Males of one species have shorter legs that only allow them to physically mate with females of the same species. a