I've been watching this Sparrow in my garden over the last couple of days, that clearly has a problem with it's feet. It can't perch on anything that is not flat. It is feeding well on the droppings from the feeders and is quite happy flying. The landings are not so good though. It's also very alert for danger and as soon as the Blackbird sings out a warning, it's off like a shot.
I hope it survives as I've grown quite attached to it. 😁
@ludwigsdiana that's what I thought. It's the thumbs that are affected as they can't support him when he's standing on a flat surface either so he keeps falling backwards. He lies in the grass though and eats the food that the other birds drop.