Question

most birds play an active role as parents, sitting patiently on their eggs and feeding their young until they can leave the nest. however, certain birds, called brood parasites, lay their eggs in the nests of other birds and never return. some lay their eggs in the nests of other birds of the same species, but about one - percent lay their eggs in the nests of other species. the common cuckoo is an example of this kind of bird. to protect their own offspring, other birds learned to recognize the cuckoos eggs and ejected them from their nests. but, as an evolutionary response, cuckoos began to lay eggs that looked exactly like those of the host. passage 2 cruel birds there are no other birds that are as cruel as the ones known as brood parasites. these birds literally dump their eggs in other birds nests so they can avoid wasting their time and energy caring for their own young. their ruthless strategy is to trick other birds into raising their babies as their own. some other birds get wise to their tactics, but they go off happily just as clever in response. some lay eggs that look just like the host eggs. that isnt terrible, but some tactics are much worse. i have heard of a common cuckoo baby pushing out the other eggs in the nest the minute it was born! 14 what evidence does each author emphasize? a. the first author emphasizes the behavior of brood parasite parents; the second author emphasizes the behavior of brood parasite babies. b. the first author emphasizes general behaviors of brood parasites; the second author emphasizes specific behaviors of common cuckoos. c. the first author emphasizes the habits of brood parasites; the second author emphasizes the negative behavior of brood parasites. d. the first author emphasizes the positive aspects of brood parasites; the second author emphasizes the negative aspects of brood parasites.

Explanation:

Passage 1 focuses on the general behavior of brood - parasite parents actively feeding their young. Passage 2 emphasizes the negative behavior of cuckoos, a type of brood parasite, such as tricking other birds and their ruthless egg - laying and offspring - rearing tactics.

Answer:

D. The first author emphasizes the behavior of brood parasite parents; the second author emphasizes the negative aspects of brood parasites.