Also I forgot to say, I tried the method using tape, it didn’t work very well and my gosling ended up just ripping her feathers out to get it off, vet wrap works better.
It’s angel wing and you’ll need to wrap it, the sooner the better.
Here’s a video guide of how to wrap
Here’s a post of how to wrap https://www.backyardchickens.com/threads/angel-wing-in-ducks-how-we-wrap-to-mend-it-pictorial.644239/
From my own expierience I think angel wing is caused by a...