I heard thud, then saw something little fall when I looked up. On the group, this little Vanuatu White Eye was looked very stiff, his leg curled and eyes closed... I thought he was dead... poor little buddy. I picked him up with both hands softly, then he shook his body, like all the sudden he wake up. He must had Concussion when he flew into the clear door. My daughter and I pat him gently for a while, he seemed happy to stay on my hand.