Drake... Burping? Hiccuping?

[Ellyhutch]

Anyone know what my Drake is doing in the attached video? He seems to be swelling his crop and then forcing a push out. He's doing this every couple of minutes. I'm watching him on the live camera in the coop and wondering if I need to go save him somehow.

https://photos.app.goo.gl/WwrvJNptqApsknvb8

 

[Crazy Maizie]

Just adjusting his crop.

 

[Ellyhutch]

Just adjusting his crop.

Ah, interesting. I guess I don't normally watch them at night so I wasn't sure what this was. Thanks!