How can I rig my foot to be able to move like a chicken's?

Hello internet!

I’m currently rigging a raptor and I’m trying to rig the foot to move like a chicken’s, meaning there’s a lot more toe bones that need moving than there would be in a human foot rig. I’ve followed part 3 of this tutorial up until after he rigged the toe bone. Here’s what my current rig looks like (blend file is attached as well).

What I’m trying to do is make the foot move like this just by rotating F (which controls the green bones) and moving G (which moves the leg). Or would I need an entirely new foot rig to do so?

Any help is greatly appreciated as it is my first time doing a rig that’s not just four bones in a line.

Thanks in advance ^^