Tiny feathered dino may have glided

https://www.science.org/content/article/glide-and-stride-tiny-feathered-dino-flapped-it-ran
A sparrow sized raptor had an extrodinary stride length indicating that it may have glided between steps.  Maybe like a flying fish on land.
There was once an old paper on the evolution of flight put up on TO around 20 years ago where a researcher shortened the feathers on the wings of a partridge so that it could not fly, but the birds were still facilitated in their running and maneuvering.  It could also run up a steeper incline using it partial wings.
Ron Okimoto