Awww. I love this picture. RD and Scoots are so adorable together. I've always seen them in a mother-daughter relationship, although perhaps that's from reading the awesome fanfic written as Scootaloo's personal diary by Tails-115
No, not really. I dont know much, but from what I've read it it works like this. The babies' wings get short spurts of large amounts of adrenaline while they're first growing in, but after that the adrenaline rushes get smaller and smaller until they stop.