To understand communication in animals, Smith stated that all three levels must be considered. By the beginning of the 1980s researchers became interested in what benefit communication signals served to those animals that use them. They also use communication signals in mating, where the birds pair for life. It is the female who circles in the air looking for a mate, while the earth-bound males 'call' to them. Afterwards the birds will go in search of a nesting site together, assist each other in constructing the 'home' and when the eggs are laid they will take it in turn to incubate them.
Chicks recognize the 'voice' of their parents from a very young age.
Honeybees - Von Frisch was the first researcher to unravel the behavior of these insects. Humpback whales - use complex songs to communicate their location and other information to the rest of the school. Kenneth Noris said that the social life of dolphins depends on sound. Parrots - have complex linguistic abilities. The greatest possibility for language training existed among the great apes, which also possess highly developed cerebral cortices.