What does this guy do with his pick?

[Nocturne]

Hello Synners! I was watching a tutorial video a lot lately and I couldn't figure out where do the guy puts his pick that seems to disappear from his hand. I think he grabs it with his middle finger but I'm not sure. Does anyone know something about this?

 

[Filip Tomiša]

it's resting on his middle finger

 

[Nocturne]

it's resting on his middle finger

I have no idea how you can do that so quickly

 

[William B.]

he rest it on the top of the guitar neck and place it under the thumb
oh nvm haha it's on the middle finger