They are incredibly strong birds. If you think about how fast and hard those wings flap, translate that into a well-aimed punch and believe me, you know you've been clobbered when one hits you.
Still, it's good to see a wild animal all fight-y, it means they are feeling better!!
On the other end of the scale, I was feeding a baby Robin and bless him, he was so tired, he nodded off perched on my finger!!
Sweeeeeeet!!!
The early bird might get the worm, but the second mouse gets the cheese.