they are both to use your mouth
The whistle is in the air to your mouth The sing is in the voice to your mouth
That must be a habit of his/her. To sing/whistle while walking
A coach that has a whistle, a Tea Kettle
Pop
No, budgies do not sing. They chatter a lot, mimic other sounds, and whistle, but they are not songbirds and thus do not sing.
Male canaries sing beautifully
Either one of them can whistle or sing, if they enjoy doing so.
Yes, a bird will usually sing when it hears another bird. We have a parakeet and when we whistle she answers.
Both makes sound.
There is a similarity between the theories.The twins had just one similarity.
Possibly. But he does whistle in the shower! ^_^ So cute!
what are the similarity between aim objective