This is great fossil of a line of birds which had long feathers on their legs as well.
A documentary on PBS’s NOVA showed how these long leg feathers helped the bird fly versus today’s birds which do not have these features at all.
I’m not seeing any leg feathers in the fossil. Two wings, and two streamer feathers in the tail. The upper leg is cocked up over the upper wing and doesn’t seem to have any sizeable feathers of its own.