I've heard the phrase bird vocalization before but I really don't know exactly what it means.
Bird vocalization
Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs are the bird sounds that are melodious to the human ear. In ornithology and birding, songs (relatively complex vocalizations) are distinguished by function from calls (relatively simple vocalizations).
Definition.
The distinction between songs and calls is based upon complexity, length, and context. Songs are longer and more complex and are associated with courtship and mating, while calls tend to serve such functions as alarms or
2011.
On January 12, 2011, composer Alan Menken was asked about the sequel in an interview. His reply was, "I've heard things but there's nothing yet. I don't know much about what's happening with that. Honestly, I don't know what the studio wants to do next. I presume there will be some future projects for me to work on. I love doing that, I really do. But I'm not frustrated that it isn't one of them. At the