Thus birds have complex vocabularies to communicate with one another to announce the dawn or sunset, to indicate the approach of a predator, to notify the sighting of food trees, to acknowledge a change in weather, etc., etc. Just as we humans use language to interact with one another, birds use their own unique avian language in their daily lives. Smaller birds that live in flocks, such as conures, communicate with the flock constantly throughout the day. In a captive environment, in the absence of a flock of peers, a single conure will call to its human contacts for reassurance and communication. This is absolutely normal, instinctive behavior and it is unreasonable to think the bird should stop calling to us because we feel it is bothersome.
Cockatoos can be quite vocal in captivity to the dismay of their owners.
In their natural habitats, cockatoos are quite noisy and the males often clear branches from the highest points of tall trees where they sit, display, and emit ear-splitting calls to defend territory and nesting sites. To expect cockatoos to be quiet in captivity is unreasonable. Before choosing a bird for a pet, one should become familiar with the characteristics of the species under consideration so that there are no unreasonable expectations of the bird that cannot be met. A. Parrot-type birds live in and around trees in their native habitats. Therefore they have access to wood and plant material, most of it alive and growing, on a consistent basis.