|Two cockatoos living in the wild in Australian's Northern Territory [Agencies]|
If you're out for a walk and a bird in a tree says to you, "Hello there," don't worry, you're not going mad.
According to Daily Mail, naturalists have reported a growing phenomenon of pet parrots that have been taught to repeat phrases by their owners before escaping from their cages and then passing on the technique to the wild flocks they join.
One scientist said that he had received numerous calls from people who were baffled to hear voices calling to them from trees in their gardens.
"Hello there!" "Hello darling!" and "What's happening?" are among the chorus of comments that flocks of wild birds have been repeating after picking up words and sentences from other birds that were once household pets.
(China.org.cn September 16, 2011)