Image imported from derpibooru 
Original Description:
 
Birb  
Boid  
Burd  
Burb
 
Here’s the final member of the Student 6, Silverstream, the lover of stairs. If there’s a pair of stairs nearby that she likes or if you yourself are a pair of stairs then her feet will be walking all over them or you. She’ll talk about stairs a lot to her 5 friend’s or the others and one time complained that there weren’t any stairs to walk on in a small antique shop in Ponyville. She was politely asked to leave. Silverstream is the most hyperactive member of the six and gets lectured a lot along with Yona by Ocellus. The 6 are like a big family even though they all still live separate lives, they’ll still be together as much as they possibly can for a myriad of different things. In this Equestria the pink Hippogriff has the magical ability to temporarily turn living beings into a set of stairs so she can walk all over them in excitement, sometimes running fast up and down them like a child without ever tripping. If her excitement reaches a peak point or beyond she can turn anyone into a set of stairs indefinitely, but this is very rare. She once turned all of her friends into stairs except for Ocellus to see how they would feel as stairs. They felt exactly like stairs. The transformed will also be sentient and feel her feet walking on them before they’re turned back to their normal selves. Some will be disgusted by becoming stairs and feeling her feet walking on them or really enjoy it, Gallus is one such griffon. Just like Yona she’s a clutz, but also means well…..unless she turns someone into a set of stairs. She won’t turn children or teens into stairs with the exception of Cozy Glow and Smolder. She’s too scared to turn Diamond and Silver into stairs to see how it would feel to walk on them.
 
Changes to their clothing and/or appearance may still happen with any of the 6 so if you see a change in the future from what you’ve already seen that’s why.