Known to be antisocial birds, cuckoos are solitary animals that practice brood parasitism, whereby they plant their young in another bird's nest through deception and subterfuge so that the host bird will take on the burden of raising the cuckoo's offspring. However, the ani species of cuckoo is highly social; anis congregate with others of their kind and often trust humans. Scientists attribute the anis' more social behavior to communal living conditions that do not require antisocial behavior of the birds.
Which of the following, if true, most strongly supports the scientists' explanation of anis' more social behavior?
【选项】
The degree to which a bird is social or antisocial is species-dependent and therefore primarily genetic.
选项是否正确？