This is a baby Killdeer that Jasper caught in the field. Jasper can catch anything and always has a delighted smile on his face. The kids also found a lonesome Killdeer egg in the field. They wanted to try and hatch it, so Grandpa set up a heat light.
If an egg doesn't hatch around the same time as the others, the parents abandon it. So this is probably why it was all alone.
The next day, it was cooked to perfection (without a bird inside) and Judy ate it.