I guess it all depends on the breed as to how high and how soon they can fly.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I am of the belief from what I have read prior to now that to be able to fly they need feathers and of any reasonable height their tail feathers. The reason I think both things is that I have seen the evidence first hand