The father contributes equally to childcare in zebra finch families and does all the singing, Vicario says. "In everyday English, 'song' and 'call' mean the same thing, but in scientific language, they're different," Vicario says. "Calls communicate information about food and predators, and males and females both use them," he says. "A song is a vocal behavior used in male-male interactions and in courtship of females, and in most songbird species, only the male sings." A young zebra finch will hear his father's song, remember and imitate it. At first, the bird's efforts are clumsy ?the songbird equivalent of a baby's first babbling syllables. But eventually, the young bird manages an almost complete copy of his parent's song that includes some improvised elements.
Birdsong scientists use the word "tutor" to describe the bird whose song the young bird copies and remembers because they've found that a young songbird will form a memory of any adult's song heard during a key period in infancy. In fact, the young bird will remember and imitate the songs of songbirds from other species, provided they fall within a certain range. When offered a choice, however, between recorded songs from their own species and those of other species, the young birds pick their own species.
"If the processes of learning in young birds and human babies have formal similarities, which it now seems they do, then studying the songbird brain can tell us how this imitation trick is actually performed by cells in the brain," Vicario says. "The bird's brain provides a laboratory for studying how memories that underlie vocal learning are stored in the brain and how the stored memories are used to guide
Source:Rutgers, the State University of New Jersey