Turn up the volume on this one! California condors do not possess the vocal cords as many of their smaller counterparts do, like warblers, wrens, or even ravens. This does not mean that they are noiseless however! In an effort to communicate their needs to their parents, condor nestlings force air through their trachea to make grunting-like sounds. Adult condors also use this technique to make hissing and grunting sounds, more often as a territorial or defensive behavior. In this case, our littl

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