Cubalayas are GREAT flyers. Mine out fly anything I've seen. I have seen them fly vertically 20 feet or more with no running start, and fly horizontally 100 yards or more if scared. The tail is really not longer than something like a leghorn, or hamburg, a gamecock, or a jungle fowl. It is a normal length, but, it looks long because of the low angle. All the breeds I mentioned are great flyers.I don't think the tail is of any hindrance to them. Seems to me the longer tail chickens to a point fly better than the short tail ones. I'm sure some other breed can fly better, but, I have not seen them personally.