I missed this too, great work @Garden Peas!
Peachick with slipped tendon - Page 4
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Good luck! Hope it works out
I think usually when you see an issue at birth, it is more likely to be a splayed leg, but could happen either way -- make sure to check and try to figure out for sure exactly where the problem is.
The really key difference was the way the vet applied the tape to the joint -- that made a big difference in the outcome. Using two flat pieces rather than wrapping around really helped. Kathy @casportpony posted something on leg fractures the other day, and that vet used a similar technique -- that would be worth looking at for sure.
And also, while I wish it were in better circumstances, welcome to the peafowl forum!