DogAndCat36
Crowing
I think that my mixes can actually fly! Not just gracefully glide. One jumped and started to glide down but he aimed upwards and actually went higher, like two extra feet! They have been jumping ever since they hatched and they are very muscly, they hang out in the trees the entire day, jumping, they are a bit feral. Could they actually start flying soon when they build up their muscles more? 
One bantam, Oddball, just yesterday flew to the top of the garage, about two stories high or more, from the bottom of a slanted slop so add about a foot also no boosted hight.
Though I must admit that it was pretty traumatic to get him down, he got frostbite in the end... but... anyway, he still managed to get that high, which is pretty impressive.
Closeups on one of the roos. (from a few months ago)

One bantam, Oddball, just yesterday flew to the top of the garage, about two stories high or more, from the bottom of a slanted slop so add about a foot also no boosted hight.
Though I must admit that it was pretty traumatic to get him down, he got frostbite in the end... but... anyway, he still managed to get that high, which is pretty impressive.

Closeups on one of the roos. (from a few months ago)