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www.penguins-world.com/penguin-communication

Vocalizations. On land, penguins are very noisy, which can be observed watching videos of penguin colonies. Specialized structures in their throat emit these vocalization sounds that sound like squawking or a high-pitch braying, very different from those produced by other birds.

seaworld.org/animals/all-about/penguins/communication

Vocalization. Penguin calls (vocalizations) are individually identifiable, allowing mates to recognize each other and also their chick. This is important because members of a large colony of penguins are nearly indistinguishable by sight. Research has identified differences in the calls of male and female emperor penguins.

prezi.com/jwlliksh3ce9/vocalization-and-communication-of-penguins

Calls between parent and chick "Communication is an important factor in colonial sea birds such as penguins, where the aid of visual, vocal and chemical cues help the interaction with other individuals (Slabbekorn 2004). Chicks will only respond to their parents call, according

www.sciencedaily.com/releases/2014/07/140730151707.htm

PLOS. (2014, July 30). Vocal variety in African penguins: Four basic vocalizations used for adult communication, two more for the young. ScienceDaily. Retrieved May 10, 2019 from www.sciencedaily ...

en.wikipedia.org/wiki/Banded_penguin

These penguins are sometimes referred to as "jack-ass" penguins, since their vocalizations tend to sound similar to a donkey braying. Vocalizations in adult penguins can be classified into 4 distinct categories based on its acoustic properties and the behavioural context in which a vocalization is produced.

www.iflscience.com/plants-and-animals/scientists-translate-penguin-calls

Researchers studying African penguin communication have found that these birds use six different vocalizations, or calls, in order to convey feelings such as hunger and aggression. According to ...

www.penguinscience.com/education/sounds_of_the_colony.php

Sounds of the Colony. Here are some sounds that penguins make and what researchers belive they mean. Adelie Penguins use sounds to attarct mates, find their chicks, ward off predators, show displeasure at a neighbor or passers by, keep together as they swim, find ohters out on the ice floes, or warn of a soon-to-occur attack.

www.penguins-world.com/how-do-penguins-communicate

Penguins’ vocalizations sound like a loud noise, but each penguin can identify the vocalizations of its mate and both parents can recognize the sound produced by their chicks. This hearing capability is crucial to take care of their offspring in a populated colony where all sounds are similar.